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Certain |
Probable |
Questionable or Doubtful |
Rejected |
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Confidence is a statement of the site as a medieval fortification or palace | ||||
| Name | Alternative Name(s) | County | Remains | Aldeburgh; The Mount | Fort Green | Suffolk | no visible | Bacton Battery | Bromholm; Bromely; Bromhill | Norfolk | no visible |
| Bayards Cove, Dartmouth | Bearscove Castle | Devon | major building | Beggars Fort | Beggers Fort | Cornwall | no visible |
| Berwick Town Wall , Spades Mire and Lord's Mount | The Ditches; Cowgate; Scotsgate; Bell Tower; Shore Gate | Berwick upon Tweed | major building | Black Joy Fort | Weybourne Hoop; Waybourne Hope; Cley; Clay | Norfolk | earthwork | Blackwell Point | Middlesex | no visible | Blakeney Harbour Sconce | Blackkey | Norfolk | no visible | Block House Point | Helvere and Allines house; Helvear Hill | Isles of Scilly | masonry ruins/remnants |
| Brightlingsea | Essex | no visible | |
| Brighton Blockhouse | Middle Street | Sussex | no visible | Brixham Blockhouse | Briksame | Devon | no visible |
| Brownsea Castle | Branksea; Poole; Brensey | Dorset | masonry ruins/remnants |
| Calshot Castle | Caldshore; Calshott; Cawshot; Calste Point | Hampshire | major building |
| Camber Castle | The Chamber; Winchelsea; Camere; Caumbre; Chambre; Rye | Sussex | major building |
| Carlisle Citadel | Nisi Prius Court; Court House; Assize Court; Crown Court | Cumberland | major building | Castle Down bastion | Isles of Scilly | earthwork | Church Norton; The Mound | The Mount; Pagham Harbour | Sussex | earthwork |
| Cromwells Castle | Isles of Scilly | no visible | |
| Dartmouth Artillery Castle | Clifton; Stoke Fleming; Sir George Carew's castle | Devon | major building | Dartmouth Bastion | Gallent's Bower; Gallion's Bower; Galions Boure | Devon | no visible |
| Dartmouth Lamberds Bulwark | Lambards Bulwark; Maiden Fort; Old Battery; Clifton; Stoke Fleming | Devon | cropmark/slight earthwork |
| Deal Castle | Dele; Deale; Dole; The great Castle | Kent | major building | Dover Port Defences | Dover Havyn; Clerk's Pier | Kent | no visible |
| Dover; Archcliff Bulwark | bulwark of earth upon the hill behind the pier at Dover | Kent | no visible |
| Dover; Bulwark in the Cliff | Black Bulwark | Kent | no visible |
| Dover; Moats Bulwark | Moates; bulwark under Dover Castle; the bulwark subtus castrum Doveri | Kent | uncertain | Dunwich Port Defences | Suffolk | no visible |
| East Cowes | Old Castle Point | Hampshire, Isle of Wight | no visible | East Looe | Cornwall | no visible |
| East Tilbury Blockhouse, Coalhouse Point | Tylbery; the old Blockhouse; Tilberie Nesse | Essex | cropmark/slight earthwork |
| Ennor Castle | Evor; Inor; Ynnor; Ivor; Old Town Castle; Sullia | Isles of Scilly | masonry footings | Erith artillery fort | Erithe | Kent | no visible |
| Felixstowe Langer Point | Felixstow; Lunger; Landguard Fort; Langerside | Suffolk | no visible |
| Felixstowe Langer Rood | Felixstow; Lunger; Walton Ferry | Suffolk | no visible | Fisshehous | Fishhouse | Hampshire, Isle of Wight | no visible |
| Flodden Hill Gun Platforms | Northumberland | earthwork | |
| Fort Charles, Salcombe | Salcombe Castle; 'The Old Bulwarke' | Devon | masonry ruins/remnants | Fort Picklecombe | the new bulwarke at Picklecombe Point | Cornwall | no visible |
| Fowey Blockhouse | Fowey Castle | Cornwall | major building |
| Gosport Tower | Fort Blockhouse; Lymdens Bulwark; Chiderodd; The bulwark of Mr Sperte's making | Hampshire | no visible |
| Gravesend Blockhouse | Cranes Bulwark; Le Grene | Kent | masonry footings |
| Grays | Graies | Essex | no visible |
| Great Yarmouth coastal defences | St Nicholas Gat; South Mount | Norfolk | no visible |
| Great Yarmouth New Mount | Norfolk | masonry ruins/remnants | Greenhithe | Greenehithe | Kent | no visible |
| Grimsby Old Blockhouse | Tresco Old Blockhouse; Dover Fort | Isles of Scilly | masonry ruins/remnants | Gun battery on other side of bay from Hurlstone Point | Somerset | uncertain | Gurnard Luck | Gurnerds fortt | Hampshire, Isle of Wight | no visible |
| Harbottle Castle | Hirbodel; Herbotelle; Harbotle; Hyrebothle; Hirbotle | Northumberland | masonry footings |
| Harrys Walls | Mount Flagon | Isles of Scilly | masonry ruins/remnants |
| Harwich; The Blockhouse of the Tower | Harwich Castle, The Castle Tower | Essex | no visible |
| Harwich; The Bulwark upon the Hill | Beacon Hill, Queen's Mount, Dunn Bulwark | Essex | no visible |
| Harwich; The Middle House | Middle Bulwark | Essex | no visible |
| Haselworth Castle, Gosport | Hasilworth | Hampshire | no visible | Higham Blockhouse | Heigham; Hiegham | Kent | no visible |
| Hull Castle, Kingston upon Hull | The Citadel | Yorkshire East Riding | no visible | Hurlstone Point gun battery | Somerset | uncertain |
| Hurst Castle | Woodward | Hampshire | major building | Isle of Wight fortalices | The abbot's mill and other places | Hampshire, Isle of Wight | no visible | Kessingland Coastal Battery | Suffolk | earthwork |
| King Charles Castle | Isles of Scilly | masonry ruins/remnants | |
| Kingston upon Hull, North Blockhouse | Yorkshire East Riding | no visible | |
| Kingston upon Hull, South Blockhouse | Yorkshire East Riding | no visible | Kingston upon Hull, South End Battery | Yorkshire East Riding | no visible |
| Kingswear Castle | Devon | major building | Kirkley Coastal Battery | Suffolk | no visible | Lee Ness | Kent | no visible |
| Lindisfarne Castle | Holy Island; Beblow Fort; Belbowe Fort; Biblawe Fort; Beblowe | Durham; North | major building | Lindisfarne Steel End | The Heugh; Osborne's Fort | Durham; North | masonry footings |
| Little Dennis Blockhouse | Cornwall | major building | |
| Lowestoft Coastal Battery: Ness Point | Lestoffe | Suffolk | no visible |
| Lowestoft Coastal Battery: South End | Lestoffe | Suffolk | no visible |
| Lowestoft North Coastal Battery | Lestoffe | Suffolk | no visible | Melcombe Block House | Dorset | no visible | Melcombe Cotton Fort | Dorset | no visible |
| Mersea Stone, East Mersea | Mersea Island, Cudmore Grove | Essex | earthwork |
| Milton Blockhouse | Mr Cobhams Bulwark; Mylton; the old Blockhouse | Kent | cropmark/slight earthwork | Minsmere Tudor entrenchments | Suffolk | no visible |
| Mount Edgcumbe Blockhouse | Blockhouse at Garden Battery; Wilderness Point; Barnpool | Cornwall | major building |
| Mount Holles | Sullia; Mout Hughes Battery | Isles of Scilly | no visible |
| Netley Castle | Abbey Hill; Netly; Letley; Letelege | Hampshire | masonry ruins/remnants | Nettlestone point | Nettlesheigh fort | Hampshire, Isle of Wight | no visible |
| Newhaven Fort | Sussex | masonry ruins/remnants | Norham Bastion | Durham; North | cropmark/slight earthwork |
| Norham Castle | Northam; Norrham; Ubbanford | Durham; North | masonry ruins/remnants | Northfleet | Northfleete | Kent | no visible |
| Norwich City Wall and Cow Tower | Norwici | Norfolk | major building | Old Hythe Battery | Old Hithe | Norfolk | no visible | Pakefield Coastal Battery | Suffolk | earthwork | Paull Fort | Paull Point Battery; Pawle | Yorkshire East Riding | no visible |
| Pendennis Castle | Pendinas; Pendinant | Cornwall | major building |
| Pevensey Battery 1 | Sussex | cropmark/slight earthwork | |
| Pevensey Battery 2 | Sussex | cropmark/slight earthwork | Pevensey Battery 3 | Sussex | no visible |
| Peveril Point, Swanage | Dorset | no visible | |
| Plymouth Blockhouse, Devils Point | Passage Point; Western Kings Point | Devon | major building |
| Plymouth Blockhouse, Eastern Kings Point | Millbay West | Devon | masonry footings |
| Plymouth Blockhouse, Firestone Bay | Winter Villa; The Artillery Tower | Devon | masonry ruins/remnants |
| Plymouth Blockhouse, Fishers Nose Tower | Lambhay Point; Queen Elizabeth's Tower | Devon | masonry ruins/remnants | Plymouth Blockhouse, Millbay and Firestone Bay wall | Hoe Blockhouse | Devon | no visible | Plymouth Blockhouse, Mount Batten | Devon | no visible |
| Plymouth Drakes Island | St Nicholas Island | Devon | masonry footings |
| Plymouth; The Royal Citadel | Devon | masonry ruins/remnants | |
| Polruan Blockhouse | Polruan Castle | Cornwall | major building |
| Portland Castle | Dorset | major building | |
| Portsmouth Round Tower | Hampshire | major building | |
| Portsmouth Square Tower | Hampshire | masonry ruins/remnants | |
| Portsmouth Town Defences | Hampshire | no visible | |
| Prior Castell's Tower, Inner Farne Island | Farne Island Tower; Prior Castel’s Tower | Durham; North | major building | Purfleet | Pourfleete | Essex | no visible | Queenborough Castle | Sheppey; Quynborow; Quinborough | Kent | cropmark/slight earthwork | Rockhouse Bank, Bexhill | Sussex | earthwork | Ryde Fort | Hampshire, Isle of Wight | no visible |
| Sandgate Castle | Sandegate; Folston | Kent | masonry ruins/remnants |
| Sandown Castle, Isle of Wight | Sandham Castle; Sandumffort | Hampshire, Isle of Wight | no visible |
| Sandown Castle, Kent | Sandowne; Sandon | Kent | masonry footings |
| Sandsfoot Castle, Weymouth | Sandfort; Sandsfort | Dorset | masonry ruins/remnants |
| Scarborough Bulwark | Yorkshire North Riding | no visible | Sharpenrode Bulwark | Sconce Point; Careys Sconce | Hampshire, Isle of Wight | no visible |
| Sheerness Garrison Point Fort | Kent | no visible | |
| Southampton Town Wall and Gods House Tower | Suthampton; South Castle; The Spur; Millhouse; Bargate; Polymond Tower; Arundel Tower; Windwhistle Tower; Prince Edward Tower; Catchcold Tower | Hampshire | major building |
| Southsea Castle | Palschyd's bulwark | Hampshire | major building |
| Southwold Gun Hill | Suffolk | no visible | Southwold Higham Bulwark | Hiham Bulwark; Fort Sussex | Suffolk | no visible | St Andrews Castle | St Andrews Point; Hamble Castle | Hampshire | masonry footings |
| St Anns Fort | Norfolk | masonry footings | |
| St Catherines Castle | Cornwall | major building | St Clements | Grays 1 | Essex | no visible | St Helens Fort | Hampshire, Isle of Wight | no visible |
| St Ives; The Island | The Castle; The Bulwarks | Cornwall | uncertain | St Marys; The Folly | Folley | Isles of Scilly | masonry ruins/remnants |
| St Mawes Castle | St Mose; St Marys; St Maudet; Pendinas; La Vousa | Cornwall | major building |
| St Michaels Mount Castle | Cornwall | masonry footings | |
| St Osyth Blockhouse | Essex | no visible | |
| Star Castle and Garrison Walls | The Garrison, The Hugh; Stella Mariae | Isles of Scilly | major building |
| Stonehouse Town Defences | Stone Manor, East Stonehouse; Estonehouse | Devon | masonry ruins/remnants |
| Studland Castle and battery | Handfast Point; Castell Leyes; castellum de Studlande | Dorset | no visible |
| The Crutch, Kings Lynn | 'ye croche' | Norfolk | cropmark/slight earthwork |
| The Downs Beach Fortifications | Great Turf Bulwark; Little Turf Bulwark; Great White Bulwark of Clay; Black or Walmer Bulwark | Kent | no visible |
| Tower of London | White Tower; magnae turris Londoniae; Turris Lundoniae | City of London | major building | Tower of Sir Edward Ringeley | Kent | no visible |
| Tynemouth Castle | Tynemouth Priory; Tiefort; Tynemuth | Northumberland | major building | Tynemouth High Light | Northumberland | no visible | Tynemouth Low Light | Northumberland | no visible |
| Upnor Castle | Upnore | Kent | major building |
| Walmer Castle | Kent | major building | |
| Wark on Tweed Castle | Carham; Carrum; Werke Sup Twedam; Castelli de Werc | Northumberland | earthwork | Warwick Castle | Mota de Warewich | Warwickshire | major building | Waxham Battery | Norfolk | no visible |
| West Cowes | Cowes Castle; Cowfort | Hampshire, Isle of Wight | masonry ruins/remnants |
| West Tilbury Blockhouse, Tilbury Fort | The Hermitage Bulwark; Thermitage Bullwark; Johne's Bulwark; Tylbery | Essex | no visible | Weybourne Fort | Norfolk | no visible | Winterton Battery | Norfolk | no visible | Woolwich | Wulwich | Kent | no visible |
| Worsleys Tower, Sharpnode Point | Sharpenrode; Round Tower Point | Hampshire, Isle of Wight | no visible | Yarbridge Battery | Hampshire, Isle of Wight | no visible |
| Yarmouth Castle | Hampshire, Isle of Wight | major building | |
| Battery at The Castle, Knowle | Devon | no visible | |
| Bridlington Quay Fort | Yorkshire East Riding | no visible | |
| Burton Upon Trent Abbey | Staffordshire | no visible | |
| Clenchwarton | Norfolk | cropmark/slight earthwork | |
| Lindisfarne; The Palace Supply Base | Durham; North | masonry ruins/remnants | |
| Strangways, Abbotsbury | Abbotsbury Castle | Dorset | no visible |
| Swale Ness Fort | Swaleness | Kent | no visible |
| West Wickham Common | Coney Hall | Kent | earthwork |
