| D Day Museum | Southsea | Hampshire |
| D.H. Lawrence Heritage | Eastwood | Nottinghamshire |
| Dagfields Crafts & Antiques Centre | Nr Nantwich | Cheshire |
| Dairy Barn Farm Shop | North Houghton | Hampshire |
| Dairy Cottage Studio | Kirkby Lonsdale | Cumbria |
| Dairyland | Nr Newquay | Cornwall |
| Daisy Nook Country Park | Failsworth | Greater Manchester |
| Dalbeattie Town Wood Car Park | Dalbeattie | Dumfries and Galloway |
| Dalby, The Great Yorkshire Forest | Dalby | North Yorkshire |
| Dale Sea Safari | Dale | Pembrokeshire |
| Dalemain Historic House & Gardens | Penrith | Cumbria |
| Dales Countryside Museum | Hawes | North Yorkshire |
| Dalgarven Mill & Museum | Kilwinning | North Ayrshire |
| Dali Universe | South Bank | Greater London |
| Dalkeith Country Park | Dalkeith | Midlothian |
| Dallas Dhu Historic Distillery | Forres | Moray |
| Dalmally Church | Dalmally | Argyll and Bute |
| Dalmeny House | South Queensferry | West Lothian |
| Dalton Castle | Dalton-in-Furness | Cumbria |
| Dalton Park | Seaham | Durham |
| Dalton Pottery | Dalton | Dumfries and Galloway |
| Dalwhinnie Distillery Visitor Centre | Dalwhinnie | Highland |
| Dan Winter's House | Armagh | Co. Armagh |
| Danbury Country Park | Danbury | Essex |
| Dandelion Designs & Images Gallery | Waternish, Isle of Skye | Highland |
| Danebury Hillfort | Stockbridge | Hampshire |
| Danebury Vineyards | Nether Wallop | Hampshire |
| Danes' Dyke | Bridlington | East Riding of Yorkshire |
| Danestream Animal Farm | New Milton | Hampshire |
| Daniels Mill | Eardington | Shropshire |
| Danish Camp | Bedford | Bedfordshire |
| Dapdune Wharf & The River Wey | Guildford | Surrey |
| Darby Houses | Coalbrookdale | Shropshire |
| Darkest Victorian London | London Bridge | Greater London |
| Darkley Gardens | Norton Canon | Herefordshire |
| Darlington Civic Theatre | Darlington | Darlington |
| Darlington Railway Centre and Museum | Darlington | Darlington |
| Dartford Borough Museum | Dartford | Greater London |
| Dartington Crystal | Great Torrington | Devon |
| Dartington Hall Gardens | Dartinton | Devon |
| Dartmoor National Park | Dartmoor | Devon |
| Dartmoor Railway | Crediton to Okehampton and Meldon Quarry. | Devon |
| Dartmoor Wildlife Park | Plymouth | Devon |
| Dartmouth Castle | Dartmouth | Devon |
| Dartmouth Museum | Dartmouth | Devon |
| Dartmouth Pottery | Dartmouth | Devon |
| Dartmouth Tourist Information Centre | Dartmouth | Devon |
| Darwin Centre | Kensington | Greater London |
| Davenport Vineyards | Crowborough | East Sussex |
| Daventry Country Park | Daventy | Northamptonshire |
| Daventry Tourist Information Centre | Daventy | Northamptonshire |
| David Austin Roses | Albrighton | West Midlands |
| David Beattie Etching Studio and Gallery | Llandygwydd | Pembrokeshire |
| David Livingstone Centre | Blantyre | Glasgow |
| David Livingstone Centre | Blantyre | South Lanarkshire |
| David Marshall Lodge Visitor Centre | Aberfoyle | Stirling |
| David Salomons House at Salomons | Tunbridge Wells | Kent |
| Daviot Wood Tourist Information Centre | Inverness | Highland |
| Dawlish Museum | Dawlish | Devon |
| Dawlish Tourist Information Centre | Dawlish | Devon |
| Dawyck Botanic Garden | Stobo, Peebles | Scottish Borders |
| De Grey Mausoleum | Flitton | Bedfordshire |
| de Havilland Aircraft Heritage Centre | St Albans | Hertfordshire |
| Deal Castle | Deal | Kent |
| Deal Tourist Information Centre | Deal | Kent |
| Dean Castle Country Park | Kilmarnock | East Ayrshire |
| Dean Clough Galleries | Halifax | West Yorkshire |
| Dean Forest Railway | Lydney | Gloucestershire |
| Dean Gallery | Edinburgh | Edinburgh |
| Dean Heritage Centre | Cinderford | Gloucestershire |
| Dean Heritage Museum Trust | Soudley | Shropshire |
| Deanston Nursery | Dumfries | Dumfries and Galloway |
| Dearnford Hall Trout Fishery | Whitchurch | Cheshire |
| Deben Cruises | Woodbridge | Suffolk |
| Deddington Castle | Deddington | Oxfordshire |
| Dee Valley Confectioners | Ballater | Aberdeenshire |
| Deen City Farm and Riding School | Merton Abbey | Greater London |
| Deene Park | Corby | Northamptonshire |
| Deep Hayes Country Park | Longsdon, Stoke-on-Trent | Staffordshire |
| Deep Sea Adventure & Sharky's Playzone | Weymouth | Dorset |
| Deep Sea World | North Queensferry | Fife |
| Deep, The | Hull | Kingston upon Hull |
| Deepdale Offroad | Barnard Castle | Durham |
| Deer Abbey | Old Deer | Aberdeenshire |
| Delabole Slate Co | Delabole | Cornwall |
| Delamere Forest | Delamere | Cheshire |
| Delgatie Castle | Turriff | Aberdeenshire |
| Denbies Wine Estate | Dorking | Surrey |
| Denbigh Castle | Denbigh | Denbighshire |
| Denby Visitors Centre | Denby | Derbyshire |
| Denham Country Park | Denham | Buckinghamshire |
| Denmans Garden | Fontwell | West Sussex |
| Dennis Severs' House | | Greater London |
| Denny Ship Model Experiment Tank | Dumbarton | West Dunbartonshire |
| Dent Brewery Tour, The | Dent | Cumbria |
| Dent Craft Centre | Sedbergh | Cumbria |
| Denton Hall Turret (Hadrian`s Wall) | Nr Newcastle | Northumberland |
| Denver Windmill | Downham Market | Norfolk |
| Department of Earth Sciences Geology Collections | | Greater London |
| Derby Cathedral | Derby | Derby |
| Derby Gaol & Pie Shoppe | Derby | Derby |
| Derby Heritage Centre | Derby | Derby |
| Derby Industrial Museum | Derby | Derby |
| Derby Museum & Art Gallery | Derby | Derby |
| Derby Tourist Information Centre | Derby | Derby |
| Derbyshire Dales National Nature Reserve | Over Haddon, Bakewell | Derbyshire |
| Dere Street Roman Road | Soutra | Scottish Borders |
| Derrymore House | Bessbrook, Newry | Co. Armagh |
| Derwen Garden Centre | Guilsfield | Powys |
| Derwent Bay Bears | Portinscale | Cumbria |
| Derwent Island House | Derwentwater | Cumbria |
| Derwentcote Steel Furnace | Nr Rowlands Gill | Durham |
| Derwentcote Steel Furnace | Newcastle upon Tyne | Tyne and Wear |
| Derwentwater Marina | Keswick | Cumbria |
| Design Museum | Tower Bridge | Greater London |
| Designs Gallery and Café | Castle Douglas | Dumfries and Galloway |
| Devenish Island Lough Erne | Enniskillen | Fermangh |
| Devenish Monastic Site | Enniskillen | Fermangh |
| Deveron Arts | Huntly | Aberdeenshire |
| Devil’s Bridge | Kirkby Lonsdale | Cumbria |
| Devizes Visitor Centre Cromwell House | Devizes | Wiltshire |
| Devon Guild of Craftsmen | Bovey Tracey | Devon |
| Devon Railway Centre | Bickleigh, Tiverton | Devon |
| Dewa Roman Experience | Chester | Cheshire |
| Dewar's World of Whiskey | Aberfeldy | Perth and Kinross |
| Dewsbury Minster | Dewsbury | West Yorkshire |
| Dewsbury Museum | Dewsbury | West Yorkshire |
| Diamond Factory | Ayr | South Ayrshire |
| Dick Institute Art Gallery and Museum | Kilmarnock | East Ayrshire |
| Dick Whittington Family Leisure Park | Longhope | Herefordshire |
| Dickens Centre | Rochester | Kent |
| Dickens Gads Hill Place | Higham | Kent |
| Dickens House Museum | Broadstairs | Kent |
| Dickens House Museum | | Greater London |
| Didcot Railway Centre | Didcot | Oxfordshire |
| Didcot Tourist Information Centre | Didcot | Oxfordshire |
| Diggerland | Cullompton | Devon |
| Diggerland | Strood | Kent |
| Diggerland | Langley Park, Durham | Durham |
| Dillington House | Ilminster | Somerset |
| Dimbola Lodge Museum | Freshwater | Isle of Wight |
| Din Llugwy Ancient Village | Llanallgo | Anglesey |
| Dinefwr | Llandeilo | Carmarthenshire |
| Dingles Steam Village | Lifton | Devon |
| Dingwall Museum | Dingwall | Highland |
| Dinosaur Adventure Park | Weston Longville, Norwich | Norfolk |
| Dinosaur Farm Museum | Brighstone | Isle of Wight |
| Dinosaur Isle | Sandown | Isle of Wight |
| Dinosaur Museum | Dorchester | Dorset |
| Dinosaur Park, The | Gumfreston, Tenby | Pembrokeshire |
| Dinosaur World | Colwyn Bay | Conwy |
| Dinosaurland | Lyme Regis | Dorset |
| Diorama Gallery | | Greater London |
| Direlton Castle | Direlton, North Berwick | East Lothian |
| Dirnanean Garden | Blairgowrie | Perth and Kinross |
| Discover | Stratford | Greater London |
| Discover Loch Ness | Inverness | Highland |
| Discover Mull | Dervaig, Mull | Argyll and Bute |
| Discovery Interactive Centre | Weymouth | Dorset |
| Discovery Museum | Newcastle upon Tyne | Tyne and Wear |
| Discovery Point | Dundee | Angus |
| Diss Museum | Diss | Norfolk |
| Diss Tourist Information Centre | Diss | Norfolk |
| Ditchley Park | Chipping Norton | Oxfordshire |
| Ditchling Museum | Ditchling | West Sussex |
| Ditchling Museum | Ditchling | East Sussex |
| Djanogly Art Gallery | Nottingham | Nottinghamshire |
| DM Auto Marine | Lochgoilhead | Argyll and Bute |
| Dobsons Sweets | Elland | West Yorkshire |
| Dobwalls Adventure | Dobwalls, Nr Liskard | Cornwall |
| Dochfour Gardens | Dochgarroch | Highland |
| Dock Museum, The | Barrow-In-Furness | Cumbria |
| Docton Mill & Gardens | Hartland, Bideford | Devon |
| Doctor Who Exhibition and Model Rail World | Llangollen | Denbighshire |
| Doddington Hall | Doddington, Lincoln | Lincolnshire |
| Doddington Place Gardens | Sittingbourne | Kent |
| Dogdyke Steam Pumping Station | Tattershall | Lincolnshire |
| Dolaucothi Gold Mines | Pumsaint, Llanwrda | Carmarthenshire |
| Dolbadarn Castle | Llanberis | Gwynedd |
| Dolbadarn Trekking Centre | Llanberis | Gwynedd |
| Dolgellau Angling Associaiton | Dolgellau | Gwynedd |
| Dolgellau Tourist Information Centre | Dolgellau | Gwynedd |
| Doll Museum & Dolls Hospital | Fordingbridge | Hampshire |
| Dolls House Collection, The | St Martins | Guernsey |
| Dolphin & Seal Centre, The | North Kessock | Highland |
| Dolphin Ecosse | Cromarty | Highland |
| Dolphin Sailing Barge Museum | Sittingbourne | Kent |
| Dolphin Trips | Avoch | Highland |
| Dolwyddelan Castle | Dolwyddelan | Conwy |
| Dome | Doncaster | South Yorkshire |
| Domestic Fowl Trust | Evesham | Worcestershire |
| Doncaster Aeroventure South Yorkshire Aircraft Museum | Doncaster | South Yorkshire |
| Doncaster Museum & Art Gallery | Doncaster | South Yorkshire |
| Doncaster Racecourse | Doncaster | South Yorkshire |
| Doncaster Tourist Information Centre | Doncaster | South Yorkshire |
| Donington Grand Prix Collection | Derby | Derbyshire |
| Donington Park | Castle Donnington | Derbyshire |
| Donington-Le-Heath Manor House | Coalville | Leicestershire |
| Donkey Sanctuary | Sidmouth | Devon |
| Donnington Castle | Newbury | West Berkshire |
| Donnington Grand Prix Collection | Castle Donnington | Leicestershire |
| Donnington Trout Farm | Upper Swell | Gloucestershire |
| Dooey's Cairn | Ballymoney | Antrim |
| Doonhill Homestead | Dunbar | East Lothian |
| Doonies Farm | Nigg | Aberdeenshire |
| Dorchester Tourist Information Centre | Dorchester | Dorset |
| Dorfold Hall | Nantwich | Cheshire |
| Dorking and District Museum | Dorking | Surrey |
| Dorman Museum | Middlesbrough | Middlesbrough |
| Dorney Court | Windsor | Windsor & Maidenhead |
| Dorneywood Garden | Dorneywood, Burnham | Buckinghamshire |
| Dornoch Cathedral | Dornoch | Highland |
| Dornoch Locans | Dornoch | Highland |
| Dorothy Clive Garden | Market Drayton | Shropshire |
| Dorothy Morris, Silk & Ceramics | Stackpole | Pembrokeshire |
| Dorset Belle Cruises | Bournemouth | Dorset |
| Dorset County Museum | Dorchester | Dorset |
| Dorset Teddy Bear Museum | Dorchester | Dorset |
| Dot Hill - London Wildlife Trust | Plumstead | Greater London |
| Douglas Horse Trams | Douglas | Isle of Man |
| Douglas Sports Centre | Dundee | Angus |
| Doune Castle | Doune | Perth and Kinross |
| Doune Castle | Doune | Stirling |
| Doune Motor Museum | Doune | Perth and Kinross |
| Dounreay Visitor Centre | Dounreay | Highland |
| Dove Cottage & The Wordsworth Museum | Grasmere | Cumbria |
| Dover Castle | Dover | Kent |
| Dover Museum and Bronze Boat Museum | Dover | Kent |
| Dover Roman Painted House | Dover | Kent |
| Dover Tourist Information Centre | Dover | Kent |
| Down House | Downe | Kent |
| Down House - Home of Charles Darwin | Orpington | Greater London |
| Down St Mary Vineyard | Down St Mary | Devon |
| Downfield Golf Club | Dundee | Angus |
| Downhill Estate | Castlerock | Co. Londonderry |
| Downpatrick Railway Museum | Downpatrick | Co. Down |
| Doxford Farm Country Store | Alnwick | Northumberland |
| Dr. Johnson’s House | City of London | Greater London |
| Dr. Manning’s Yard | Kendal | Cumbria |
| Dragon Hall | Norwich | Norfolk |
| Dragon Theatre | Barmouth | Gwynedd |
| Dragonfly Cruises | Brecon | Powys |
| Dragonfly Cruises | Bedwas | Caerphilly |
| Dragonfly Maze | Bourton-on-the-Water | Gloucestershire |
| Draycote Water Country Park | Rugby | Warwickshire |
| Drayton Manor Theme Park | Tamworth | Staffordshire |
| Drenewydd Museum | Rhymney | Caerphilly |
| Drew's Art | Rosemarket | Pembrokeshire |
| Droitwich Spa Brine Baths Complex | Droitwich | Worcestershire |
| Drought Garden and Arboretum | Rutland Water | Rutland |
| Druchtag Motte | Mochrum | Dumfries and Galloway |
| Druidstone Park | Canterbury | Kent |
| Drum Castle and Garden | Banchory | Aberdeenshire |
| Drum Farm Centre | Drumnadrochit | Highland |
| Drum Manor Forest Park | Cookstown | Co. Tyrone |
| Drum, The | Aston | West Midlands |
| Drumcoltran Tower | Dalbeattie | Dumfries and Galloway |
| Drumena Cashel | Castlewellan | Co. Down |
| Drumlanrig Castle | Thornhill | Dumfries and Galloway |
| Drumlanrig's Tower | Hawick | Scottish Borders |
| Drummond Castle Gardens | Crieff | Perth and Kinross |
| Drummond Trout Farm & Fishery | Comrie | Perth and Kinross |
| Drumtroddan Cup and Ring Marked Rocks | Port William | Dumfries and Galloway |
| Druridge Bay Country Park | Druridge Bay | Northumberland |
| Druridge Pools Nature Reserve | Druridge Bay | Northumberland |
| Drusillas Park | Alfriston | East Sussex |
| Dryburgh Abbey | Dryburgh, Melrose | Scottish Borders |
| Drymen Tourist Information Centre | Drymen | Stirling |
| Dryslwyn Castle | Dryslwyn | Carmarthenshire |
| Dualchas: Barra Heritage and Cultural Centre | Isle of Barra | Western Isles |
| Duart Castle | Craignure | Argyll and Bute |
| Dudley Museum and Art Gallery | Dudley | West Midlands |
| Dudley Tourist Information Centre | Dudley | West Midlands |
| Dudley Zoo and Castle | Dudley | West Midlands |
| Dudmaston Hall | Quatt, Nr Bridgnorth | Shropshire |
| Dudson Museum | Hanley | Staffordshire |
| Duff House | Banff | Aberdeenshire |
| Dufftown Museum | Dufftown | Moray |
| Dufftown Railway | Dufftown | Moray |
| Dufftown Tourist Information Centre | Dufftown | Moray |
| Duffus Castle | Nr Elgin | Moray |
| Duimneil House Garden | Appin | Argyll and Bute |
| Duke of Cornwalls Light Infantry Regiment Museum | Bodmin | Cornwall |
| Duke Of Lancaster Canal Cruises | Lancaster | Lancashire |
| Duke's Wood Nature Reserve | Eakring | Nottinghamshire |
| Dukes Theatre and Independent Cinema | Lancaster | Lancashire |
| Dullatur Golf Club | Cumberbauld | North Lanarkshire |
| Dulwich Picture Gallery | Dulwich | Greater London |
| Dumbarton Castle | Dumbarton | West Dumbartonshire |
| Dumbarton Tourist Information Centre | Dumbarton | West Dumbartonshire |
| Dumfries Ice Bowl | Dumfries | Dumfries and Galloway |
| Dumfries Museum | Dumfries | Dumfries and Galloway |
| Dumfries Tourist Information Centre | Dumfries | Dumfries and Galloway |
| Dun Carloway Broch | Carloway, Isle of Lewis | Western Isles |
| Dunadd Fort | Kilmartin | Argyll and Bute |
| Dunardry Car Park | Cairnbaan | Argyll and Bute |
| Dunaskin Experience | Patna | East Ayrshire |
| Dunbar Tourist Information Centre | Dunbar | East Lothian |
| Dunbar Town House Museum | Dunbar | East Lothian |
| Dunbeath Heritage Centre | Dunbeath | Highland |
| Dunblane Cathedral | Dunblane | Stirling |
| Dunblane Cathedral Museum | Dunblane | Perth and Kinross |
| Dunblane Tourist Information Centre | Dunblane | Stirling |
| Duncansby Head | John O' Groats | Highland |
| Duncombe Park | Helmsley | North Yorkshire |
| Dundee Airport | Dundee | Dundee |
| Dundee Contemporary Arts | Dundee | Dundee |
| Dundee Ice Arena | Dundee | Dundee |
| Dundee Rep Theatre | Dundee | Dundee |
| Dundee Tourist Information Centre | Dundee | Dundee |
| Dundee University Botanic Gardens | Dundee | Dundee |
| Dundonald Castle | Kilmarnock | East Ayrshire |
| Dundonald International Ice Bowl | Belfast | Co. Antrim |
| Dundrennan Abbey | Dundrennan | Dumfries and Galloway |
| Dundrum Castle | Dundrum | Co. Down |
| Duneight Motte and Bailey | Lisburn | Lisburn |
| Dunes Bowl | South Shields | Tyne and Wear |
| Dunfermline Museum & Small Gallery | Dunfermline | Fife |
| Dunfermline Palace and Abbey | Dunfermline | Fife |
| Dunfermline Tourist Information Centre | Dunfermline | Fife |
| Dunge Valley Gardens | Kettleshulme, High Peak | Derbyshire |
| Dungeness Power Stations' Visitor Centre | Dungeness | Kent |
| Dungiven Priory and O'Cahan's Tomb | Dungiven | Londonderry |
| Dunglass Collegiate Church | Cockburnspath | East Lothian |
| Dunham Massey | Altrincham | Cheshire |
| Dunkeld Cathedral | Dunkeld | Perth and Kinross |
| Dunkeld Tourist Information Centre | Dunkeld | Perth and Kinross |
| Dunkery Vineyard | Wootton Courtenay | Somerset |
| Dunkeswell Memorial Museum | Dunkeswell | Devon |
| Dunluce Castle | Bushmills | Antrim |
| Dunluce Centre, The | Portrush | Co. Antrim |
| Dunnet Head | Thurso | Highland |
| Dunnottar Castle | Dunecht | Aberdeenshire |
| Dunollie Castle | Oban | Argyll and Bute |
| Dunoon Tourist Information Centre | Dunoon | Argyll and Bute |
| Dunrobin Castle & Gardens | Golspie | Highland |
| Dunskey Garden and Woodland Walks | Portpatrick | Dumfries and Galloway |
| Dunstable Downs, Countryside Centre & Whipsnade Estate | Kensworth, Dunstable | Bedfordshire |
| Dunstable Tourist Information Centre | Dunstable | Bedfordshire |
| Dunstaffnage Castle | Dunbeg, Oban | Argyll and Bute |
| Dunstanburgh Castle | Craster, Alnwick | Northumberland |
| Dunster Castle | Dunster, Nr Minehead | Somerset |
| Dunster Dolls Museum | Dunster, Nr Minehead | Somerset |
| Dunster Working Watermill | Dunster, Nr Minehead | Somerset |
| Duntulum Castle | North Skye | Highland |
| Dunvegan Castle | Dunvegan, Isle of Skye | Highland |
| Dunwich Heath | Dunwich, Saxmundham | Suffolk |
| Dupath Well | Callington | Cornwall |
| Durdle Door | Wareham | Dorset |
| Durham Castle | Durham | Durham |
| Durham Cathedral | Durham | Durham |
| Durham City Tourist Information Centre | Durham | Durham |
| Durham Dales Centre | Stanhope | Durham |
| Durham Light Infantry Museum and Durham Art Gallery | Durham | Durham |
| Durham Tees Valley Airport | Darlington | Darlington |
| Durham University Botanic Garden | Durham | Durham |
| Durham University Oriental Museum | Durham | Durham |
| Durlston Country Park | Swanage | Dorset |
| Durness Tourist Information Centre | Durness | Highland |
| Dutch Cottage, The | Rayleigh | Essex |
| Duthie Park Winter Gardens & Restaurant | Aberdeen | Aberdeenshire |
| Duxford Chapel | Whittlesford | Cambridgeshire |
| Dyfed Shire Horse Farm & Leisure Farm | Eglwyswrw, Nr Cardigan | Pembrokeshire |
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