- HaaHoos - Twyford, Reading
- Hack Green Secret Nuclear Bunker - Nantwich
- Haddon Hall - Bakewell
- Haden Hill House Museum - Cradley Heath
- Haig Colliery Mining Museum - Kells, Whitehaven
- Hailes Abbey - near Winchcombe, Cheltenham
- Halfpenny Green Vineyards - South Staffordshire
- Hall Farm Park - South Kelsey
- Hall Hill Farm - Lanchester
- Hall’s Croft - Stratford-upon-Avon
- Halton Miniature Railway - Runcorn
- Ham House and Garden - Ham, Richmond
- Ham Wall RSPB Reserve - Meare, Nr Glastonbury
- Hamerton Zoo Park - Hamerton, Nr Sawtry
- Hampton Court Castle and Gardens - Hope-Under-Dinmore, Leominster
- Hampton Court Palace - East Molesey
- Hanbury Hall and Gardens - Droitwich Spa
- Harborough Museum - Market Harborough
- Harbour Park - Littlehampton
- Hardwick Estate: Stainsby Mill - Doe Lea, Chesterfield
- Hardwick Hall - Chesterfield
- Hardys Animal Farm - Ingoldmells, Skegness
- Harewood House - Harewood, Leeds
- Hartlepool’s Maritime Experience - Hartlepool
- Hastings Adventure Golf - Hastings
- Hastings Fishermen’s Museum - Hastings
- Hatchlands Park - East Clandon, Guildford
- Hatfield House - Hatfield
- Hatton Adventure Farm - Hatton, Warwick
- Haughmond Abbey - Upton Magna, Uffington
- Hawkstone Park Follies - Shrewsbury
- Hayle Estuary RSPB Reserve - Hayle
- Haynes International Motor Museum - Sparkford, Nr Yeovil
- Hazel Brow Farm - Richmond
- Head of Steam – Darlington Railway Museum - Darlington
- Heddon Valley - Parracombe, Barnstaple
- Hedingham Castle - Castle Hedingham, Halstead
- Helena Thompson Museum - Workington
- Hell-Fire Caves - West Wycombe
- Helmsley Castle - Helmsley
- Helston Folk Museum - Helston
- Heptonstall Museum - Heptonstall, Hebden Bridge
- Hereford Cathedral - Hereford
- Heritage Motor Centre - Gaydon
- Herschel Museum of Astronomy - Bath
- Hesketh Farm Park - Bolton Abbey, Skipton
- Hestercombe Gardens - Taunton
- Heugh Battery Museum - Hartlepool
- Hexham Abbey - Hexham
- Hickory Dickory’s Playhouse Birmingham - Kings Heath
- Hidcote - Hidcote Bartrim, near Chipping Campden
- High Beeches Garden - Handcross
- High Force Waterfall - Forest-in-Teesdale
- Highclere Castle - Newbury
- Highdown Gardens - Worthing
- Highfields Happy Hens - Etwall
- Highland Museum of Childhood - Strathpeffer
- Hill Close Gardens - Warwick
- Hill Hall - Epping
- Hill Top - Ambleside
- Himley Hall and Park - Dudley
- Hinckley and District Museum - Hinckley
- Hoar Park Children’s Farm - Nuneaton
- Hobbledown - Epsom
- HodgePodge - Audlem
- Hoghton Tower - Hoghton, Nr Preston
- Hollycombe Working Steam Museum - Liphook
- Hollytrees Museum - Colchester
- Holst Birthplace Museum - Cheltenham
- Holywell Bay Fun Park - Holywell, Newquay
- Home Front Experience - Llandudno
- Honeybrook Farm - Wimborne
- Honister Slate Mine - Borrowdale
- Hoo Farm Animal Kingdom - Telford
- Hop Farm Family Park - Paddock Wood, Tonbridge
- Hornsea Museum - Hornsea
- Horsey Windpump - Great Yarmouth
- Houghton Mill and Waterclose Meadows - Houghton, near Huntingdon
- Hounslow Urban Farm - Feltham, Greater London
- House of Marbles - Bovey Tracey
- Housesteads Roman Fort - Hexham
- Howick Hall Gardens - Alnwick
- Howletts Wild Animal Park - Bekesbourne, Nr Canterbury
- Hydra Kids - Ecclesfield, Sheffield
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