England

Berkshire

West Berkshire — Donnington Castle
Windsor and Maidenhead — Windsor Castle

Cambridgeshire

Cambridge — Cambridge Castle
City of Peterborough — Woodcroft

Cheshire

Cheshire East — Cholmondeley Castle
Cheshire West and Chester — Beeston Castle — Chester Castle

Co. Durham

County Durham — Barnard Castle — Bowes Castle — Lumley Castle — Raby Castle

Cornwall

Cornwall — Launceston Castle — Pendennis Castle — Restormel Castle — St Mawes Castle — St Michael's Mount — Tintagel Castle

Cumbria

Bewcastle — Bew Castle
Brampton — Naworth Castle
Brigsteer — Sizergh Castle
Brough — Brough Castle
Carlisle — Carlisle Castle
Clifton — Brougham Castle
Eden — Appleby Castle
Outhgill — Pendragon Castle
Penrith — Penrith Castle
Rampside — Piel Castle
Scales — Gleaston
Waberthwaite — Muncaster Castle

Derbyshire

Bolsover — Bolsover Castle
Castleton — Peveril Castle
Duffield — Duffield Castle
Kilburn — Horston Castle
Marlpool — Codnor Castle
Melbourne — Melbourne Castle

Devon

Berry Pomeroy — Berry Pomeroy Castle
Harberton — Totnes Castle
Kingswear — Dartmouth Castle — Kingswear Castle
Lydford — Lydford Castle
Marldon — Compton Castle
Okehampton — Okehampton Castle
Tiverton — Cranmore Castle

Dorset

Corfe Castle — Corfe Castle
East Lulworth — Lulworth Castle
Portland — Portland Castle
Rodwell — Sandsfoot Castle
Sherborne — Sherborne Castle

East Riding of Yorkshire

Skipsea — Skipsea Castle

East Sussex

Herstmonceux — Herstmonceux Castle
Pevensey — Pevensey Castle
Rye — Camber Castle

Essex

Castle Hedingham — Hedingham Castle
Colchester — Colchester Castle
Hadleigh — Hadleigh Castle
Saffron Walden — Walden Castle

Gloucestershire

Berkeley — Berkeley Castle
Saint Briavels — St Briavels Castle
Thornbury — Thornbury Castle
Winchcombe — Sudeley Castle

Greater London

City of London — Winchester Palace
Edmonton — Bruce
London — Jewel Tower — Tower of London

Hampshire

Calshot — Calshot Castle
Greywell — Odiham Castle
Portchester — Portchester Castle
Totland — Hurst Castle

Herefordshire

Croft — Croft Castle
Eastnor — Eastnor Castle
Goodrich — Goodrich Castle
Longtown — Longtown Castle
Wigmore — Wigmore Castle

Hertfordshire

Berkhamsted — Berkhamsted Castle

Isle of Wight

Carisbrooke — Carisbrooke Castle
Yarmouth — Yarmouth Castle

Isles of Scilly

Bryher — King Charles's Castle

Kent

Addington — St Leonard's Tower
Allington — Allington Castle
Brompton — Upnor Castle
Deal — Deal Castle
Dover — Dover Castle
Farningham — Eynsford Castle
Hollingbourne — Leeds Castle
Lamberhurst — Scotney Castle
Rochester — Rochester Castle
Stonewood — Stone Castle
West Hythe — Lympne Castle
Westenhanger — Westenhanger Castle

Leicestershire

Belvoir — Belvoir Castle
Kirby Muxloe — Kirby Muxloe Castle

Lincolnshire

Grimsthorpe — Grimsthorpe Castle
Lincoln — Lincoln Castle
Old Bolingbroke — Bolingbroke Castle
Tattershall — Tattershall Castle

Norfolk

Belton — Burgh Castle
Castle Acre — Castle Acre Castle
Castle Rising — Castle Rising Castle
Weeting — Weeting Castle
Wormegay — Wormegay Castle

North Yorkshire

Helmsley — Helmsley Castle
Middleham — Middleham Castle
Pickering — Pickering Castle
Richmond — Richmond Castle
Scarborough — Scarborough Castle
Spofforth — Spofforth Castle
West Tanfield — Marmion Tower

Northamptonshire

Barnwell — Barnwell Castle
Caldecott — Rockingham Castle

Northumberland

Alnwick — Alnwick Castle
Aydon — Aydon Castle
Bamburgh — Bamburgh Castle
Berwick-Upon-Tweed — Berwick Castle
Chillingham — Chillingham Castle
Edlingham — Edlingham Castle
Embleton — Dunstanburgh Castle
Etal — Etal Castle
Gilsland — Thirlwall Castle
Harnham — Belsay Castle
Norham — Norham Castle
Warkworth — Warkworth Castle
Wylam — Prudhoe Castle

Nottinghamshire

Nottingham — Nottingham Castle

Oxfordshire

Deddington — Deddington Castle
Wallingford — Wallingford Castle

Shropshire

Acton Burnell — Acton Burnell Castle
Clun — Clun Castle
Craven Arms — Stokesay Castle
Ludlow — Ludlow Castle
Moreton Corbet — Moreton Corbet Castle
Shrewsbury — Shrewsbury Castle

Somerset

Nunney — Nunney Castle
Westwood — Farleigh Hungerford Castle

South Yorkshire

Conisbrough — Conisbrough Castle

Staffordshire

Alton Towers — Alton Castle
Derrington — Stafford Castle
Fazeley — Tamworth Castle
Stowe — Chartley Castle
Tutbury — Tutbury Castle

Suffolk

Framlingham — Framlingham Castle
Orford — Orford Castle

Tyne and Wear

Pallion — Hylton Castle

Warwickshire

Kenilworth — Kenilworth Castle
Warwick — Warwick Castle

West Sussex

Bramber — Bramber Castle

West Yorkshire

Sandal — Sandal Castle

Wiltshire

Ansty — Old Wardour Castle
Collingbourne Ducis — Ludgershall Castle

Scotland

Aberdeenshire

Auchinblae — Drumtochty Castle
Ballogie — Birse Castle
Braemar — Braemar Castle
Carnaquheen — Balmoral Castle
Cock Bridge — Corgarff Castle
Corse — Craigievar Castle
Craigearn — Castle Fraser
Dunnottar — Fetteresso Castle
Garlogie — Drum Castle
Hirn — Crathes Castle
Kildrummy — Kildrummy Castle
Kirkton of Glenbuchat — Glenbuchat Castle
Marnoch — Kinnairdy Castle
Muchalls — Muchalls Castle
Plaidy — Craigston Castle
Port Erroll — Slains Castle
Rosehearty — Pitsligo Castle
Saint Combs — Inverallochy Castle
Sandend — Findlater Castle
Stonehaven — Dunnottar Castle
Tifty — Fyvie Castle
Tullynessle — Terpersie Castle
Turriff — Delgatie Castle — Hatton Castle

Angus

Aberlemno — Melgund Castle
Auchmithie — Ethie Castle
Brechin — Brechin Castle
Bridgend of Lintrathen — Airlie Castle
Careston — Careston Castle
Cortachy — Cortachy Castle
Farnell — Kinnaird Castle
Gannachy — Edzell Castle
Glamis — Glamis Castle
Guthrie — Guthrie Castle
Kinnell — Colliston Castle
Kirkton of Glenbuchat — Glenbuchat Castle
Maud — Brucklay Castle
Monikie — Affleck Castle
Sandend — Findlater Castle
Tannadice — Finavon Castle
Turriff — Hatton Castle

Argyll and Bute

Ardbeg — Dunyvaig Castle
Ardfern — Craignish Castle
Ardno — Dunderave Castle
Benderloch — Barcaldine Castle
Carradale — Torrisdale Castle
Connel — Dunstaffnage Castle
Craignure — Duart Castle
Crinan — Duntrune Castle
Croig — Glengorm Castle
Ford — Fincharn Castle
Kilmory — Kilmory Castle
Lerags — Gylen Castle
Lochbuie — Moy Castle
Port Bannatyne — Kames Castle
Stronmilchan — Kilchurn Castle

City of Dundee

Broughty Ferry — Broughty Castle

City of Edinburgh

Liberton — Craigmillar Castle
Newbattle — Dalhousie Castle

Dumfries and Galloway

Beattock — Auchen Castle
Carronbridge — Drumlanrig Castle
Carsluith — Carsluith Castle
Challoch — Lochnaw Castle
Closeburn — Closeburn Castle
Glencaple — Caerlaverock Castle
Lochmaben — Lochmaben Castle
Sanquhar — Sanquhar Castle

East Ayrshire

Bowhouse — Loudoun Castle
Crosshouse — Caprington Castle
Fenwick — Craufurdland Castle
Galston — Cessnock Castle
Kilmarnock — Dean Castle
Lochwinnoch — Barr Castle

East Dunbartonshire

Blanefield — Craigend Castle

East Lothian

East Linton — Hailes Castle
Gifford — Black Castle
North Berwick — Tantallon Castle

Falkirk

Airth — Airth Castle
Charlestown — Blackness Castle

Fife

Auchtermuchty — Myres Castle
Ballingry — Lochore Castle
Burntisland — Rossend Castle
Crossgates — Fordell Castle
Donibristle — Couston Castle
East Wemyss — Wemyss Castle
Errol — Ballinbreich Castle
Monimail — Fernie Castle
Rosyth — Rosyth Castle

Highland

Achintraid — Strome Castle
Aitnoch — Lochindorb Castle
Ardfin — Claig Castle
Ardullie — Foulis Castle
Ardvasar — Armadale Castle
Astle — Skibo Castle
Auldearn — Rait Castle
Backies — Dunrobin Castle
Cawdor — Cawdor Castle — Kilravock Castle
Crosskirk — Brims Castle
Dingwall — Tulloch Castle
Drumnadrochit — Urquhart Castle
Dunbeath — Dunbeath Castle
Inchnadamph — Ardvreck Castle
Inveran — Carbisdale Castle
Invergarry — Invergarry Castle
Keiss — Keiss
Kilmorack — Beaufort Castle
Kilmuir — Balnagown Castle
Kilvaxter — Duntulm Castle
Kinloch — Kinloch Castle
Kirkhill — Moniack Castle

Midlothian

Borthwick — Crichton Castle
Charlestown — Blackness Castle
Newbattle — Dalhousie Castle

Moray

Dufftown — Balvenie Castle
Dyke — Brodie Castle
Knockando — Ballindalloch Castle
Rafford — Blervie Castle

North Ayrshire

Brodick — Brodick Castle
Dalry — Clonbeith Castle
Kilwinning — Eglinton Castle
Skelmorlie — Skelmorlie Castle
West Kilbride — Law Castle

Perth and Kinross

Aberdalgie — Dupplin Castle
Arngask — Balvaird Castle
Ballintuim — Blackcraig Castle
Bridge of Balgie — Meggernie Castle
Caputh — Murthly Castle
Craighall — Newton Castle
Crieff — Drummond Castle
Crook of Devon — Tullibole Castle
Farnell — Kinnaird Castle
Kilspindie — Megginch Castle
Kinfauns — Elcho Castle
Kinloch — Ardblair Castle
Methven — Methven Castle
Perth — Huntingtower Castle

Scottish Borders

Castleton — Hermitage Castle
Coldingham — Fast Castle
Duns — Duns Castle — Wedderburn Castle
Kelso — Floors Castle
Lauder — Thirlestane Castle
Lintalee — Ferniehirst Castle
Roberton — Branxholme Castle

Shetland

Belmont — Muness Castle
Scalloway — Scalloway Castle

South Ayrshire

Annbank — Sundrum Castle
Ballantrae — Glenapp Castle
Maidens — Culzean Castle

South Lanarkshire

Crossford — Craignethan Castle
Meikle Earnock — Cadzow Castle

Stirling

Drymen — Buchanan Castle

West Dunbartonshire

Balloch — Balloch Castle

West Lothian

Broxburn — Niddry Castle
Port Edgar — Dundas Castle — Duntarvie Castle

Western Isles

Stornoway — Lews Castle

Wales

Brecknockshire

Bronllys — Bronllys Castle
Builth Wells — Builth Castle
Hay — Hay Castle

Caernarfonshire

Conwy — Conwy Castle
Criccieth — Criccieth Castle
Cwm-y-glo — Bryn Bras Castle
Llanberis — Dolbadarn Castle
Llandegai — Penrhyn Castle

Denbighshire

Chirk — Chirk Castle
Denbigh — Denbigh Castle
Llanddoget — Gwydir Castle
Rhuthun — Ruthin Castle

Flintshire

Sandycroft — Hawarden Castle

Glamorgan

Caerphilly — Caerphilly Castle
Cathays Park — Cardiff Castle
Landimore — Weobley Castle
Merthyr Mawr — Candleston Castle
Pancross — Fonmon Castle
Parkmill — Pennard Castle
Penrice — Penrice Castle
Taff's Well — Castell Coch

Merionethshire

Harlech — Harlech Castle

Monmouthshire

Abergavenny — Abergavenny Castle
Chepstow — Chepstow Castle
Grosmont — Grosmont Castle
Llanvetherine — White Castle
Newport — Newport Castle
Raglan — Raglan Castle
Skenfrith — Skenfrith Castle
Usk — Usk Castle

Montgomeryshire

Abermule — Dolforwyn Castle
Leighton — Powis Castle
Llandyssil — Montgomery Castle

Pembrokeshire

Carew — Carew Castle
Cilgerran — Cilgerran Castle
Hwlffordd — Haverfordwest Castle
Landshipping — Picton Castle
Llawhaden — Llawhaden Castle
Manorbier — Manorbier Castle
Pembroke — Pembroke Castle
Wiston — Wiston Castle