United Kingdom fort
From Warlike
< fortQ1785071/Q145
< fort
Q1785071/Q145
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Location: KML, Cluster Map, Maps,
174 places
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Agaton Fort ⓘ
fort in City of Plymouth, Devon, England, UK -

Alderstead Fort ⓘ
fort in Reigate and Banstead, Surrey, England, UK -

Archcliffe Fort ⓘ
fort in Dover, Kent, England, UK -

Bayard's Cove Fort ⓘ
castle in Devon, England, UK

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Beacon Hill Battery ⓘ
artillery battery guarding Harwich harbour

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Bembridge Fort ⓘ
fort in Bembridge, Isle of Wight, England, UK

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Berry Head Fort and battery and Hardy's Head Battery ⓘ
fort in Brixham, Torbay, England, UK -

Betchworth Fort ⓘ
fort in Mole Valley, Surrey, England, UK -
Blacknor Fort ⓘ
Fort on the Isle of Portland, England -

Block house on Island to south of Soldiers Point ⓘ
fort in Newry, County Down, Northern Ireland -

Bowden Battery ⓘ
architectural structure in City of Plymouth, Devon, England, UK -
Box Hill Fort ⓘ
fort in Surrey, England, UK

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Brownsea Castle ⓘ
grade II listed Device Fort in Purbeck, United Kingdom -
Calshot Castle ⓘ
artillery fort on the Calshot Spit, Hampshire, England, UK

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Camber Castle ⓘ
16th-century English fort

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Castle Point Old Fort ⓘ
scheduled monument in Wales -

Castle Toll Saxon burgh and medieval fort ⓘ
archaeological site in Newenden, Kent, England, UK -

Cawsand Fort ⓘ
fort in Maker-with-Rame, Cornwall, England, UK -

Chapel Bay Fort ⓘ
fort in Pembrokeshire overlooking Milford Haven

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Charlemont Fort ⓘ
fort in Charlemont, County Armagh, Northern Ireland -

Chudleigh Fort ⓘ
architectural structure in Bideford, Torridge, Devon, England, UK -

Cliffe Fort ⓘ
fortification

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Clifford's Fort ⓘ
fort in North Tyneside, Tyne and Wear, England, UK -

Clifford's Fort South And East Wall Facing River ⓘ
architectural structure in North Tyneside, Tyne and Wear, England, UK -

Clifford's Fort West And South West Wall ⓘ
architectural structure in North Tyneside, Tyne and Wear, England, UK -

Coalhouse Fort ⓘ
artillery fort at Coalhouse Point in Essex, England, UK

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Cockham Wood Fort ⓘ
fort in Hoo St Werburgh, Kent, England, UK -

Crownhill Fort ⓘ
Royal Commission Fort built in the 1860s in England

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Culmore Fort ⓘ
fort in Derry, County Londonderry, Northern Ireland -
Dartmouth Castle ⓘ
Grade I listed Device Fort in Dartmouth, United Kingdom

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Deal Castle ⓘ
16th century coastal artillery fort, located in Deal, Kent, England, UK

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Dover Castle ⓘ
medieval castle in Dover, Kent, England, UK

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Dover Western Heights ⓘ
fortification complex in Kent, UK

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East Cowes Castle ⓘ
former Device Fort in East Cowes on the Isle of Wight, England -

Efford Fort ⓘ
fort in City of Plymouth, Devon, England, UK -

Egg Buckland Keep ⓘ
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Exmouth Danish Fort ⓘ
fort in East Devon, Devon, England, UK
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Eyemouth Fort ⓘ
architectural structure in Scottish Borders, Scotland, UK -

Fishguard Fort ⓘ
Grade II listed building in Pembrokeshire. Situated on Castle Point, reached by footpath from car park at top of hill N of Lower Town.
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Fort Albert ⓘ
fort in Bermuda -

Fort Albert ⓘ
fort on Alderney in the Channel Islands -

Fort Albert ⓘ
tower fort on the Isle of Wight, England, UK -
Fort Amherst ⓘ
fort in Chatham, UK

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Fort Austin ⓘ
fort in Plymouth, Devon, England, UK -

Fort Bedford ⓘ
fort on Ascension Island -

Fort Belan ⓘ
Grade I listed building in Gwynedd
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Fort Blockhouse ⓘ
fort in Gosport, Hampshire, England, UK -
Fort Borstal ⓘ
fort in Medway, Kent, England, UK

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Fort Bovisand ⓘ
coastal fort in Devon, England, UK -

Fort Bridgewoods ⓘ
former military facility in Medway, England -

Fort Brockhurst ⓘ
historic fort in Gosport, England

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Fort Burgoyne ⓘ
fort in Guston, Dover, England, UK

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Fort Charlotte ⓘ
fort in Shetland Islands, Scotland, UK

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Fort Clarence ⓘ
fort in Medway, Kent, England, UK -

Fort Cumberland ⓘ
fort in City of Portsmouth, Hampshire, England, UK
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Fort Cunningham ⓘ
fort in Bermuda -

Fort Darland ⓘ
Chatham Ring Fort in Kent, UK -
Fort Darnet ⓘ
Disused military installation in Kent, England, UK -

Fort Elson ⓘ
Palmerston fort in Gosport, England -

Fort Fareham ⓘ
fort in Fareham, Hampshire, England, UK -

Fort Farningham ⓘ
fort in Farningham, Sevenoaks, England, UK -

Fort George ⓘ
18th-century fortress built in the Scottish Highlands in the aftermath of the Jacobite Rising of 1745

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Fort Gilkicker ⓘ
fort in Gosport, Hampshire, England, UK -

Fort Gomer ⓘ
former fort in Gosport, England -

Fort Grange ⓘ
fort in Gosport, Hampshire, England, UK -

Fort Halstead ⓘ
army mobilisation centre in Kent that became a military research centre -

Fort Hayes ⓘ
fort on Ascension Island -

Fort Hoo ⓘ
Disused military installation in Kent, England, UK -

Fort Horsted ⓘ
fort in Medway, Kent, England, UK -
Fort Hubberstone ⓘ
Grade II* listed building in Milford Haven. -

Fort Ile de Raz ⓘ
Fort in Alderney -

Fort Luton ⓘ
Medway fort

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Fort Matilda ⓘ
area in Greenock, Inverclyde, Scotland, UK -

Fort Monckton ⓘ
fort in Gosport, UK -
Fort Nelson ⓘ
Grade I listed military museum in Hampshire, England, UK

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Fort Paull ⓘ
former military museum in Paull, East Riding of Yorkshire, England, UK

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Fort Perch Rock ⓘ
grade II* listed fort in New Brighton, Wirral, Merseyside, England, UK

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Fort Pitt ⓘ
fort in Kent, England, UK -

Fort Popple ⓘ
fort in Bermuda -

Fort Purbrook ⓘ
fort in Havant, Hampshire, England, UK -

Fort Royal ⓘ
fort in Worcester, Worcestershire, England, UK -

Fort St. Catherine ⓘ
fort on St. George's Island, Bermuda -

Fort Stamford ⓘ
fort in City of Plymouth, Devon, England, UK -

Fort Victoria ⓘ
fort in Freshwater, Isle of Wight, England, UK

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Fort Wallington ⓘ
Palmerston fort in Fareham, Hampshire, England, UK -

Fort Widley ⓘ
fort in Portsmouth, UK

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Fort William ⓘ
ruined fort in Scotland -

French Camp ⓘ
1548-9 fort in Dunglass, East Lothian, Scotland, UK -
Garrison Point Fort ⓘ
fort in Sheerness, Kent, England, UK -

Gate's Fort ⓘ
fort in Bermuda -

Golden Hill Fort ⓘ
1863-1872 defensible barracks building at Freshwater, Isle of Wight, England, UK
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Grain Fort ⓘ
fort at the mouth of the Medway, Kent, UK -

Grey Point Fort ⓘ
artillery battery in Helen's Bay, County Down
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Hallgarth ⓘ
mound in Kendal, Cumbria, England, UK -

Harry's Walls ⓘ
fort in St Mary's, Isles of Scilly, Cornwall, England, UK -

Henley Fort ⓘ
military mobilisation centre in Surrey, England, UK

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Hillsborough Fort ⓘ
fort in Royal Hillsborough, County Down, Northern Ireland -

Horsey Hill Fort ⓘ
fort in City of Peterborough, Cambridgeshire, England, UK -

Hull Castle ⓘ
former artillery fort in Kingston upon Hull in England -

Hull Castle, South Blockhouse and part of late 17th century Hull Citadel Fort at Garrison Side ⓘ
fort in City of Kingston upon Hull, East Riding of Yorkshire, England, UK -

Hurst Castle ⓘ
Device Fort in Hampshire, England

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in-use buildings within Fort Charlotte, Lerwick ⓘ
architectural structures in Shetland Islands, Scotland, UK -
Inner Pierhead Fort ⓘ
fort at the entrance to Portland Harbour, UK -

Lade Fort ⓘ
fort in Lydd, Folkestone and Hythe, England, UK -

Landguard Fort ⓘ
fort in England, Britain

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Landward Fort ⓘ
fort in Bermuda -

Leith Fort ⓘ
fort in Edinburgh, Scotland, UK -
Lumps Fort ⓘ
fortification in Southsea, City of Portsmouth, England, UK -

Mersea Fort ⓘ
Artillery fort in the East Mersea, UK -

Netley Castle ⓘ
castle in Netley village on the border of Hampshire, England, UK -

New Tavern Fort ⓘ
historic artillery fort in Gravesend, Kent, England, UK

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Newhaven Fort ⓘ
Victorian fort in Newhaven, East Sussex, England, UK

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North Weald Redoubt ⓘ
London Mobilisation Centre in Epping Forest, England, UK -

Nothe Fort ⓘ
fort in Weymouth, Dorset, England, United Kingdom

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O’Doherty’s Fort ⓘ
fort in Derry, County Londonderry, Northern Ireland -

Osborne's Fort ⓘ
fort in Holy Island, Northumberland, England, UK -

Paget Fort ⓘ
fort in Bermuda -

Parson's Lodge Battery ⓘ
gun battery on the Rock of Gibraltar -

Pater Fort ⓘ
Grade II listed building in Pembroke Dock. -

Pendennis Castle ⓘ
Device Fort on the west side of the estuary of the River Fal, near Falmouth in Cornwall, England, UK

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Penrhos Camp (civil war earthworks) ⓘ
scheduled monument in Wales -

Pewley Hill Mobilisation Centre ⓘ
army mobilisation centre in Surrey -

Pickett Hamilton fort, Hilsea ⓘ
fort in City of Portsmouth, Hampshire, England, UK -

Picklecombe Fort ⓘ
architectural structure in Maker-with-Rame, Cornwall, England, UK -

Pilgrim Fort ⓘ
fortification in Caterham Valley, Tandridge, England, UK -

Plymouth Breakwater Fort ⓘ
fort in Plymouth, Devon, England, UK -

Polhawn Fort ⓘ
fortified building in Cornwall, England, UK -

Popton Fort ⓘ
building in Angle, United Kingdom -

Portland Breakwater Fort ⓘ
fort in Portland Harbour, Dorset, United Kingdom -

Portland Castle ⓘ
Grade I listed Device Fort in Dorset, England, UK

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Promontory fort, medieval chapel of St Michael's and Second World War radar station at Rame Head ⓘ
fort in Maker-with-Rame, Cornwall, England, UK -

Reigate Fort ⓘ
fort in Reigate and Banstead, Surrey, England, UK

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Resolution Fort: Civil War town defences at Friary Court ⓘ
fort in City of Plymouth, Devon, England, UK -

Salcombe Castle ⓘ
ruined fortification near Salcombe -

Sandgate Castle ⓘ
Grade I listed Device Fort in Sandgate, Kent, England, UK -

Sandown Castle ⓘ
former artillery fort constructed by Henry VIII in Sandown, Kent, England, UK -

Sandown Castle ⓘ
Device Fort built at Sandown on the Isle of Wight -

Sandown Fort ⓘ
Palmerston Fort on the Isle of Wight -
Sandsfoot Castle ⓘ
castle in Weymouth, Dorset, England, UK

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Scoveston Fort ⓘ
Grade II listed building in Llanstadwell. Some 600m NW of Little Honeyborough and approximately 1km NE of Waterston. -

Scraesdon Fort ⓘ
fort in Antony, Cornwall, England, UK -

Seaward Fort ⓘ
fort in Bermuda -

Shoreham Fort ⓘ
fort in West Sussex, England, UK
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Shornemead Fort ⓘ
fort in Shorne, Kent, England, UK -

Slough Fort ⓘ
fort in Allhallows, Kent, England, UK

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Slough Fort and wing batteries ⓘ
fortifications in Allhallows, Kent, England, UK

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Smith's Fort ⓘ
fort in Bermuda -

South Hook Fort ⓘ
fort in Herbrandston, Pembrokeshire, Wales, UK -

Southampton Fort ⓘ
fort in Bermuda -
Southsea Castle ⓘ
castle in Portsmouth, Hampshire, England, UK
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St Catherine's Castle ⓘ
castle in Fowey, Cornwall, England, UK

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St Catherine's Fort ⓘ
19th century fort in Wales -

St Mawes Castle ⓘ
castle in Cornwall built in the 16th century

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Stack Rock Fort ⓘ
fort built on a small island in Milford Haven, Pembrokeshire -

Staddon Fort ⓘ
fort in Plymouth, Devon, UK -

Summerhouse Fort ⓘ
Grade II listed building in Vale of Glamorgan. On the cliffs in the far south-easterly corner of Llantwit major Community set in the centre of Summerhouse Camp. -

Tandragee Fort ⓘ
fort in Feeny, County Londonderry, Northern Ireland -

Tara Fort ⓘ
fort in Portaferry, County Down, Northern Ireland -

The medieval and post-medieval fortifications at Berwick upon Tweed ⓘ
fort in Berwick-upon-Tweed, Northumberland, England, UK

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Thorne Island ⓘ
small island in Wales dominated by a Palmerston Fort -

Tilbury Fort ⓘ
bastioned fort on the Thames Estuary

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Tregantle Fort ⓘ
fort in Antony, Cornwall, England, UK -

Tynemouth Castle and Priory ⓘ
historic coastal site in north-eastern England

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Upton Fort ⓘ
fort in Osmington, Dorset, England, UK -

Verne Citadel ⓘ
citadel in Portland, Dorset, England, UK -

Walmer Castle ⓘ
castle in Kent, England, UK

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West Blockhouse Fort ⓘ
19th-century fort in Dale, Pembrokeshire, Wales, UK -

West Cowes Castle ⓘ
castle in Cowes, Isle of Wight, England, UK -

Whitehaven Old Fort ⓘ
18th century coastal battery overlooking Whitehaven Harbour and an associated lime kiln -

Woldingham Fort ⓘ
London mobilisation centre -

Woodlands Fort ⓘ
fort in Plymouth, Devon, England, UK -
Yarmouth Castle ⓘ
English artillery fort

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| Type | Subtype | Date | Description | Notes | Source |
|---|---|---|---|---|---|
| site | fort | 1863 | Agaton Fort | fort | Wikidata |
| site | fort | 1890 | Alderstead Fort | fort | Wikidata |
| site | fort | 1370 | Archcliffe Fort | historical military facility, fort | Wikidata |
| site | castle | Bayard's Cove Fort | fort, English Heritage, castle | Wikidata | |
| site | artillery battery | 1889 | Beacon Hill Battery | artillery battery, fort | Wikidata |
| site | fort | 1867 | Bembridge Fort | fort | Wikidata |
| site | fort | Berry Head Fort and battery and Hardy's Head Battery | fort | Wikidata | |
| site | fort | 1890 | Betchworth Fort | fort | Wikidata |
| site | fort | 1900 | Blacknor Fort | fort | Wikidata |
| site | fort | 1649 | Block house on Island to south of Soldiers Point | fort | Wikidata |
| site | fort | 1863 | Bowden Battery | fort | Wikidata |
| site | fort | 1890 | Box Hill Fort | fort | Wikidata |
| site | castle | 1545 | Brownsea Castle | John Lewis Partnership, fort, castle | Wikidata |
| site | castle | 1539 | Calshot Castle | fort, English Heritage, castle | Wikidata |
| site | castle | 1539 | Camber Castle | fort, English Heritage, castle | Wikidata |
| site | fort | Castle Point Old Fort | fort | Wikidata | |
| site | castle | Castle Toll Saxon burgh and medieval fort | archaeological site, fort, motte-and-bailey castle, burh | Wikidata | |
| site | fort | Cawsand Fort | fort | Wikidata | |
| site | fort | Chapel Bay Fort | military museum, fort | Wikidata | |
| site | fort | 1602 | Charlemont Fort | fort, barracks | Wikidata |
| site | fort | Chudleigh Fort | fort | Wikidata | |
| site | fort | 1861 | Cliffe Fort | fort | Wikidata |
| site | fort | Clifford's Fort | building complex, fort | Wikidata | |
| site | fort | Clifford's Fort South And East Wall Facing River | fort | Wikidata | |
| site | fort | Clifford's Fort West And South West Wall | fort | Wikidata | |
| site | fort | 1877 | Coalhouse Fort | military museum, fort | Wikidata |
| site | fort | 1669 | Cockham Wood Fort | fort | Wikidata |
| site | fort | Crownhill Fort | military museum, fort, bunker | Wikidata | |
| site | fort | 1649 | Culmore Fort | fort | Wikidata |
| site | castle | 1388 | Dartmouth Castle | military museum, fort, English Heritage, castle | Wikidata |
| site | castle | 1539 | Deal Castle | military museum, fort, English Heritage, castle | Wikidata |
| site | castle | 1179 | Dover Castle | history museum, fort, archaeological site, English Heritage, bunker, castle | Wikidata |
| site | fort | 1779 | Dover Western Heights | fort, English Heritage | Wikidata |
| site | castle | East Cowes Castle | fort, castle | Wikidata | |
| site | fort | 1863 | Efford Fort | fort | Wikidata |
| site | fort | 1863 | Egg Buckland Keep | fort | Wikidata |
| site | fort | Exmouth Danish Fort | fort | Wikidata | |
| site | fort | Eyemouth Fort | fort | Wikidata | |
| site | fort | Fishguard Fort | fort | Wikidata | |
| site | fort | Fort Albert | fort | Wikidata | |
| site | fort | Fort Albert | fort | Wikidata | |
| site | fort | 1856 | Fort Albert | fort | Wikidata |
| site | fort | Fort Amherst | independent museum, military museum, fort | Wikidata | |
| site | fort | 1863 | Fort Austin | military road, fort | Wikidata |
| site | fort | Fort Bedford | fort | Wikidata | |
| site | fort | 1775 | Fort Belan | fort | Wikidata |
| site | fort | Fort Blockhouse | fort | Wikidata | |
| site | fort | 1885 | Fort Borstal | fort | Wikidata |
| site | fort | 1861 | Fort Bovisand | fort | Wikidata |
| site | fort | Fort Bridgewoods | fort, bunker | Wikidata | |
| site | fort | 1858 | Fort Brockhurst | military museum, fort, English Heritage | Wikidata |
| site | fort | 1861 | Fort Burgoyne | The Land Trust, fort | Wikidata |
| site | fort | Fort Charlotte | fort | Wikidata | |
| site | fort | 1808 | Fort Clarence | fort | Wikidata |
| site | fort | Fort Cumberland | fort, English Heritage | Wikidata | |
| site | fort | Fort Cunningham | fort | Wikidata | |
| site | fort | Fort Darland | fort | Wikidata | |
| site | fort | 1870 | Fort Darnet | fort | Wikidata |
| site | fort | Fort Elson | fort | Wikidata | |
| site | fort | 1861 | Fort Fareham | fort, bunker | Wikidata |
| site | fort | 1890 | Fort Farningham | fort | Wikidata |
| site | fort | 1748 | Fort George | military museum, fort, barracks | Wikidata |
| site | fort | 1863 | Fort Gilkicker | fort | Wikidata |
| site | fort | 1858 | Fort Gomer | fort | Wikidata |
| site | fort | 1863 | Fort Grange | fort | Wikidata |
| site | fort | 1895 | Fort Halstead | fort | Wikidata |
| site | fort | Fort Hayes | fort | Wikidata | |
| site | fort | 1861 | Fort Hoo | fort | Wikidata |
| site | fort | 1880 | Fort Horsted | fort | Wikidata |
| site | fort | 1860 | Fort Hubberstone | fort | Wikidata |
| site | fort | Fort Ile de Raz | fort | Wikidata | |
| site | fort | 1876 | Fort Luton | fort | Wikidata |
| site | fort | Fort Matilda | fort, neighborhood | Wikidata | |
| site | fort | Fort Monckton | fort | Wikidata | |
| site | fort | 1860 | Fort Nelson | national museum, military museum, fort | Wikidata |
| site | fort | 1861 | Fort Paull | military museum, fort | Wikidata |
| site | fort | 1825 | Fort Perch Rock | fort | Wikidata |
| site | fort | 1805 | Fort Pitt | fort | Wikidata |
| site | fort | Fort Popple | fort | Wikidata | |
| site | fort | 1860 | Fort Purbrook | fort | Wikidata |
| site | fort | 1858 | Fort Rowner | fort, Royal Navy, British Army | Wikidata |
| site | fort | Fort Royal | fort | Wikidata | |
| site | fort | 1861 | Fort Southwick | fort | Wikidata |
| site | fort | Fort St. Catherine | fort | Wikidata | |
| site | fort | 1861 | Fort Stamford | fort | Wikidata |
| site | fort | Fort Victoria | fort | Wikidata | |
| site | fort | 1874 | Fort Wallington | fort | Wikidata |
| site | fort | 1860 | Fort Widley | fort | Wikidata |
| site | fort | Fort William | fort | Wikidata | |
| site | fort | 1548 | French Camp | fort | Wikidata |
| site | fort | 1861 | Garrison Point Fort | fort | Wikidata |
| site | fort | Gate's Fort | fort | Wikidata | |
| site | fort | 1863 | Golden Hill Fort | fort, barracks | Wikidata |
| site | fort | 1861 | Grain Fort | fort | Wikidata |
| site | fort | 1904 | Grey Point Fort | military museum, fort | Wikidata |
| site | fort | Hallgarth | motte, fort, mound | Wikidata | |
| site | fort | Harry's Walls | English Heritage, fort | Wikidata | |
| site | fort | Henley Fort | fort | Wikidata | |
| site | fort | Hillsborough Fort | fort | Wikidata | |
| site | fort | 1643 | Horsey Hill Fort | fort | Wikidata |
| site | fort | 1542 | Hull Castle | fort | Wikidata |
| site | fort | Hull Castle, South Blockhouse and part of late 17th century Hull Citadel Fort at Garrison Side | fort | Wikidata | |
| site | fort | 1541 | Hurst Castle | fort, English Heritage, military museum, Device Forts | Wikidata |
| site | fort | in-use buildings within Fort Charlotte, Lerwick | fort | Wikidata | |
| site | fort | Inner Pierhead Fort | fort | Wikidata | |
| site | fort | Lade Fort | fort | Wikidata | |
| site | castle | 1540 | Landguard Fort | military museum, fort, local museum, English Heritage, castle | Wikidata |
| site | fort | Landward Fort | fort | Wikidata | |
| site | fort | Leith Fort | fort, barracks | Wikidata | |
| site | fort | 1859 | Lumps Fort | fort | Wikidata |
| site | fort | 1543 | Mersea Fort | fort | Wikidata |
| site | castle | 1542 | Netley Castle | fort, castle | Wikidata |
| site | fort | New Tavern Fort | military museum, fort | Wikidata | |
| site | fort | 1864 | Newhaven Fort | military museum, fort | Wikidata |
| site | fort | 1890 | North Weald Redoubt | fort | Wikidata |
| site | fort | 1860 | Nothe Fort | local authority museum, military museum, fort | Wikidata |
| site | fort | O’Doherty’s Fort | fort | Wikidata | |
| site | fort | 1671 | Osborne's Fort | fort | Wikidata |
| site | fort | Paget Fort | fort | Wikidata | |
| site | fort | Parson's Lodge Battery | fort, Gibraltar | Wikidata | |
| site | fort | Pater Fort | fort, wall | Wikidata | |
| site | fort | 1540 | Pendennis Castle | independent museum, military museum, fort, English Heritage | Wikidata |
| site | fort | Penrhos Camp (civil war earthworks) | fort | Wikidata | |
| site | fort | 1890 | Pewley Hill Mobilisation Centre | fort | Wikidata |
| site | fort | Pickett Hamilton fort, Hilsea | fort | Wikidata | |
| site | fort | 1864 | Picklecombe Fort | fort | Wikidata |
| site | fort | 1890 | Pilgrim Fort | fort | Wikidata |
| site | fort | 1865 | Plymouth Breakwater Fort | fort | Wikidata |
| site | fort | 1867 | Polhawn Fort | fort | Wikidata |
| site | fort | 1859 | Popton Fort | fort | Wikidata |
| site | fort | Portland Breakwater Fort | fort | Wikidata | |
| site | castle | 1539 | Portland Castle | military museum, historic house museum, fort, English Heritage, castle, independent museum | Wikidata |
| site | fort | Promontory fort, medieval chapel of St Michael's and Second World War radar station at Rame Head | fort | Wikidata | |
| site | fort | 1898 | Reigate Fort | fort | Wikidata |
| site | fort | Resolution Fort: Civil War town defences at Friary Court | fort | Wikidata | |
| site | castle | Salcombe Castle | fort, castle | Wikidata | |
| site | castle | 1539 | Sandgate Castle | fort, castle | Wikidata |
| site | castle | 1539 | Sandown Castle | fort, ruins, castle | Wikidata |
| site | castle | 1545 | Sandown Castle | destroyed building or structure, fort, castle | Wikidata |
| site | fort | 1864 | Sandown Fort | fort | Wikidata |
| site | castle | Sandsfoot Castle | fort, castle | Wikidata | |
| site | fort | 1860 | Scoveston Fort | fort | Wikidata |
| site | fort | 1859 | Scraesdon Fort | fort | Wikidata |
| site | fort | Seaward Fort | fort | Wikidata | |
| site | fort | 1857 | Shoreham Fort | fort | Wikidata |
| site | fort | Shornemead Fort | Royal Society for the Protection of Birds, archaeological site, fort | Wikidata | |
| site | fort | 1867 | Slough Fort | military museum, fort | Wikidata |
| site | artillery battery | Slough Fort and wing batteries | artillery battery, fort | Wikidata | |
| site | fort | Smith's Fort | fort | Wikidata | |
| site | fort | South Hook Fort | barracks, fort | Wikidata | |
| site | fort | Southampton Fort | fort | Wikidata | |
| site | castle | 1543 | Southsea Castle | military museum, local authority museum, fort, castle | Wikidata |
| site | castle | 1538 | St Catherine's Castle | fort, English Heritage, castle | Wikidata |
| site | fort | 1870 | St Catherine's Fort | fort | Wikidata |
| site | castle | 1539 | St Mawes Castle | fort, English Heritage, castle | Wikidata |
| site | fort | Stack Rock Fort | fort | Wikidata | |
| site | fort | 1861 | Staddon Fort | fort | Wikidata |
| site | fort | Summerhouse Fort | fort | Wikidata | |
| site | fort | 1599 | Tandragee Fort | fort | Wikidata |
| site | fort | 1599 | Tara Fort | fort | Wikidata |
| site | fort | The medieval and post-medieval fortifications at Berwick upon Tweed | fort | Wikidata | |
| site | fort | Thorne Island | fort, islet, hotel | Wikidata | |
| site | fort | 1539 | Tilbury Fort | military museum, fort, English Heritage | Wikidata |
| site | fort | 1859 | Tregantle Fort | fort | Wikidata |
| site | castle | 601 | Tynemouth Castle and Priory | military museum, historic house museum, fort, English Heritage, castle | Wikidata |
| site | fort | Upton Fort | fort | Wikidata | |
| site | fort | 1857 | Verne Citadel | fort, citadel | Wikidata |
| site | castle | 1539 | Walmer Castle | history museum, historic house museum, fort, English Heritage, castle | Wikidata |
| site | fort | 1857 | West Blockhouse Fort | fort | Wikidata |
| site | castle | 1539 | West Cowes Castle | castle, fort | Wikidata |
| site | fort | Whitehaven Old Fort | fort | Wikidata | |
| site | fort | 1890 | Woldingham Fort | fort | Wikidata |
| site | fort | 1863 | Woodlands Fort | fort | Wikidata |
| site | castle | 1547 | Yarmouth Castle | military museum, fort, English Heritage, castle | Wikidata |

