Certain |
Possible |
Questionable Doubtful |
Rejected |
|
Confidence is a statement of the site as a medieval fortification or palace |
| Name | Alternative Name(s) | County | Remains |
| Sandy seigework | Bedfordshire | Uncertain | Brightwell | Bretewell | Berkshire | Nothing visible |
| Cholsey Grange | Cholsey Castle | Berkshire | Cropmarks/slight earthworks |
| Hamstead Marshall 1 (siege castle) | Berkshire | Earthworks | South Moreton siege work | Berkshire | Earthworks |
| Wallingford Church of St Peter | Berkshire | Uncertain | |
| Bundington Siege Camp | Bondington | Berwick upon Tweed | Nothing visible |
| Wigmore Pond | Cambridgeshire | Earthworks | |
| Croft Castle, Winkleigh | Devon | Earthworks | |
| Exeter Danes Castle | New Castle | Devon | Cropmarks/slight earthworks |
| Plympton siege work | Devon | Cropmarks/slight earthworks | |
| Corfe Siege Work; The Rings | Dorset | Earthworks | East Chelborough, Stake Farm | Dorset | Cropmarks/slight earthworks |
| Shaftesbury Motte and Bailey | Dorset | Nothing visible | Durham City Church of St Giles | Durham; County Palatinate of | Nothing visible |
| St Osyth Seigework | Essex | Uncertain | |
| Godshill Castle Hill, Woodgreen | Fordingbridge | Hampshire | Cropmarks/slight earthworks |
| Holt Pond Motte, Blendworth | Motley's Copse | Hampshire | Cropmarks/slight earthworks |
| Powderham Castle, Crondall | Powder Castle | Hampshire | Earthworks |
| Steers Copse Mound, Bentley | Hampshire | Cropmarks/slight earthworks | |
| Aston Tump 2, Pipe Aston | Herefordshire | Earthworks | |
| Hereford Cathedral Close, siege castle | Herefordshire | Nothing visible | |
| Lodge Wood Mound, Wigmore | Herefordshire | Earthworks | Monks Court Mound, Eardisland | Herefordshire | Earthworks |
| Shobdon Court Mound, Shobdon Park | Herefordshire | Nothing visible | Berkhamsted Seigeworks | Hertfordshire | Earthworks | Huntingdon Mill Common | Huntingdonshire | Cropmarks/slight earthworks | Rochester siege castles | Kent | Nothing visible |
| Rochester, Boley Hill | Bullie Hill; Bully | Kent | Cropmarks/slight earthworks |
| Lincoln siege-works | Lincolnshire | Nothing visible | |
| Castle Rising Keepers Wood | Norfolk | Cropmarks/slight earthworks | |
| Norwich Seigework | Norfolk | Nothing visible | |
| Lilbourne Roundhill | Hill Ground | Northamptonshire | Earthworks |
| Bamburgh Siege Castle | Malvoisin; Malveisin; Malueisin; novum castellum apud Bebbanburg | Northumberland | Nothing visible |
| Southwell Minster | Nottinghamshire | Nothing visible | Stephens Mount, Crowmarsh | Crowmarsh Gifford; Stephens Castle | Oxfordshire | Nothing visible | Wallingford siege castles | Oxfordshire | Uncertain | Ludlow Siege Works | Shropshire | Nothing visible | Marchamley Moat Bank | Shropshire | Uncertain |
| Panpudding Hill | Pampudding Hill; Oldbury | Shropshire | Earthworks |
| Castle Cary Siege Work | Somerset | Nothing visible | Dunster Seige Work | Somerset | Nothing visible |
| Ipswich Castle Hill | Suffolk | Nothing visible | Westleton Heath | Suffolk | Cropmarks/slight earthworks | Arundel siege castles | Sussex | Uncertain |
| Burpham; The Burgh | Sussex | Cropmarks/slight earthworks | |
| Cockhill, Patching | Cock Hill | Sussex | Cropmarks/slight earthworks | Ford Castle, Sussex | Sussex | Cropmarks/slight earthworks | Lyminster seige castle | Warningcamp | Sussex | Uncertain |
| Rackham Bank | Rackham Banks | Sussex | Cropmarks/slight earthworks |
| Warningcamp siege castle | Batworth Park | Sussex | Earthworks |
| Coventry siege castle | Warwickshire | Nothing visible | |
| Marston siegework | The Bank | Warwickshire | Earthworks |
| Downton Castle Meadow | Wiltshire | Nothing visible | |
| Great Somerford; The Mound | The Mount | Wiltshire | Earthworks |
| Lewisham Castle, Aldbourne Chase | Wiltshire | Earthworks | |
| Malmesbury Cams Hill | Wiltshire | Earthworks | Malmesbury siege castles | Wiltshire | Nothing visible |
| Wanborough seige castle | Wiltshire | Uncertain | Worcester siege castle, Diglis | Worcestershire | Nothing visible | Worcester siege castle, Green Hill | Worcestershire | Nothing visible | Worcester siege castle, Red Hill | Worcestershire | Nothing visible | Worcester siege castle, West Bank | Henwick's Hill | Worcestershire | Nothing visible |
| Pickering Beacon Hill | Yorkshire North Riding | Earthworks | |
| Bradfield Castle Hill | Yorkshire West Riding | Earthworks |