- Waddesdon Manor - Waddesdon, near Aylesbury
- Wakehurst Place - Ardingly, Haywards Heath
- Walby Farm Park - Crosby-on-Eden, Carlisle
- Wallington - Cambo, Morpeth
- Walmer Castle and Gardens - Deal
- Walsall Leather Museum - Walsall
- Walworth Castle Birds of Prey - Walworth
- Wardown Park Museum - Luton
- Wareham Town Museum - Wareham
- Warhammer World - Lenton, Nottingham
- Warkworth Castle and Hermitage - Warkworth
- Warner Bros. Studio Tour London - Watford
- Warner Textile Archive - Braintree
- Warrington Museum and Art Gallery - Warrington
- Warwick Castle - Warwick
- Washington Old Hall - Washington
- Watchet Boat Museum - Watchet
- Watermouth Castle and Family Theme Park - Ilfracombe
- WaterWorld - Stoke on Trent
- Weardale Museum and High House Chapel - Ireshopeburn, Bishop Auckland
- Weaver Hall Museum and Workhouse - Northwich
- Weaver’s Cottage - Kilbarchan, Greater Glasgow & Clyde Valley
- Weeting Castle - Weeting
- Wellingborough Museum - Wellingborough
- Wells and Mendip Museum - Wells
- Wenlock Priory - Much Wenlock
- Weoley Castle Ruins - Weoley Castle, Birmingham
- West Lodge Rural Centre - Desborough, Kettering
- West Midlands Safari and Leisure Park - Bewdley
- Westbury Court Garden - Westbury-on-Severn
- Weston Park Museum - Sheffield
- Weston-Super-Mare Museum - Weston-super-Mare
- Westonzoyland Pumping Station Museum - Westonzoyland, Bridgwater
- Westwood Manor - Bradford-on-Avon
- Weymouth Museum - Weymouth
- Whale of a Time - Cambridge
- Wheelgate Park - Newark
- Whipple Museum of the History of Science - Cambridge
- White Post Farm - Farnsfield
- White Scar Caves - Ingleton
- Whitehouse Farm Centre - Morpeth
- Wibbly Wobbly World of Play - Perry Barr, Birmingham
- Wicken Fen National Nature Reserve - Ely
- Wicksteed Park - Kettering
- Wightwick Manor and Gardens - Wolverhampton
- Wigston Framework Knitters Museum - Wigston
- Wilberforce House - Hull
- Wild Raspberry Textiles and Ceramics Cafe - Pin Mill, Chelmondiston
- Wild Things Soft Play Centre - Bramhall, Stockport
- Wild Wings Birds of Prey - Warrington
- Wilderhope Manor - Much Wenlock
- Wilderness Wood - Hadlow Down
- Wilderspin National School - Barton-upon-Humber
- Wildwood - Herne Bay
- Williamson Art Gallery and Museum - Birkenhead, Wirral
- Williamson Tunnels Heritage Centre - Liverpool
- Willington Dovecote and Stables - Willington, near Bedford
- Willow Tree Family Farm - Shirebrook, Mansfield
- Willows Farm Village - St Albans
- Wimborne Minster Model Town - Wimborne Minster
- Wimpole Estate - Arrington, Royston
- Winchester City Museum - Winchester
- Windmill Animal Farm - Burscough
- Windsor Castle - Windsor
- Wingham Wildlife Park - Canterbury
- Winkworth Arboretum - Godalming
- Winterbourne House and Garden - Edgbaston, Birmingham
- Wirral Transport Museum - Birkenhead, Wirral
- Wistow Maze - Leicester
- Witley Court and Gardens - Great Witley
- Wizzy World - Farnborough
- Woburn Abbey - Woburn Park
- Woburn Safari Park - Woburn Park
- Wollaton Hall and Deer Park - Wollaton, Nottingham
- Wonderland - Telford
- Woodchester Park - Nympsfield, near Stonehouse
- Woodhorn - Ashington
- Woodlands Leisure Park - Blackawton, Totnes
- Woodside Farm and Leisure Park - Luton
- Woodside Wildlife and Falconry Park - Langworth, Lincoln
- Wookey Hole - Wells
- Woolsthorpe Manor - Woolsthorpe by Colsterworth, near Grantham
- Wordsworth House and Garden - Cockermouth
- World Museum - Liverpool
- World of James Herriot - Thirsk
- Worsbrough Mill Museum and Country Park - Barnsley
- Wot Pots - Bristol
- Wray Castle - Ambleside
- Wrest Park - Silsoe, Luton
- Wroxeter Roman City - Wroxeter, near Shrewsbury
- Wye Valley Butterfly Zoo - Ross-on-Wye
- Wythenshawe Community Farm - Manchester
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