- Gainsborough Model Railway - Gainsborough
- Gainsborough Old Hall - Gainsborough
- Gainsborough’s House - Sudbury
- Galleries of Justice Museum - Nottingham
- Gallery of Costume - Rusholme, Manchester
- Gambado Chelsea - Chelsea, London
- Gardens and Grounds of Herstmonceux Castle - Hailsham
- Gauntlet Birds of Prey Eagle and Vulture Park - Knutsford
- Gawthorpe Hall - Padiham, near Burnley
- Geevor Tin Mine - Pendeen, Penzance
- Gentleshaw Wildlife Centre - Eccleshall
- George Marshall Medical Museum - Worcester
- George Stephenson’s Birthplace - Wylam
- Gibside - Burnopfield, Gateshead
- Giddy Kids - Preston
- Giddy Kidz Party and Play Centre - Warrington
- Giddy Kippers - Nelson
- Gillingham Museum - Gillingham
- Gladstone Pottery Museum - Stoke-on-Trent
- Glasgow Science Centre - Glasgow
- Glastonbury Abbey - Glastonbury
- Glazydayz - Ledbury
- Glendurgan Garden - Mawnan Smith, near Falmouth
- Glenside Hospital Museum - Bristol
- Gnome Magic - Dedham, Colchester
- Go Ape Alice Holt - Bucks Horn Oak, Nr Farnham
- Go Ape Bedgebury - Goudhurst, Cranbrook
- Go Ape Black Park Country Park - Wexham
- Go Ape Bracknell - Bracknell
- Go Ape Buxton - Buxton
- Go Ape Cannock Chase - Rugeley
- Go Ape Crawley - Crawley
- Go Ape Delamere Forest - Northwich
- Go Ape Grizedale - Hawkshead
- Go Ape Haldon Forest - Kennford, Exeter
- Go Ape Moors Valley - Ashley Heath
- Go Ape Rivington - Horwich, Bolton
- Go Ape Sherwood Pines - Edwinstowe
- Go Ape Whinlatter - Braithwaite, Keswick
- Go Ape Wyre Forest - Bewdley
- Go Bananas Play Zone - Burntwood
- Go Bananas Soft Play - Ebley, Stroud
- Go Hyper - Dewsbury
- Go Kids! Play Centre - Speke, Liverpool
- Goddards - York
- Godolphin - Godolphin Cross, Helston
- Godshill Model Village - Godshill
- Godstone Farm and Playbarn - Godstone
- Gold Hill Museum and Garden - Shaftesbury
- Goodrich Castle - Goodrich, Ross on Wye
- Gordon Boswell Romany Museum - Spalding
- Gordon Russell Design Museum - Broadway
- Gorse Hill City Farm - Leicester
- Gower Heritage Centre - Gower, Swansea
- Grace Darling Museum - Bamburgh
- Grassington Folk Museum - Grassington, Skipton
- Great Central Railway - Loughborough
- Great Chalfield Manor and Garden - near Melksham
- Great North Museum: Hancock - Newcastle upon Tyne
- Great Orme Tramway - Llandudno
- Great Yarmouth Row Houses and Greyfriars’ Cloisters - Great Yarmouth
- Greater Manchester Police Museum - Manchester
- Green Frog Pottery - Malvern
- Greenmeadow Community Farm - Cwmbran
- Greens Cafe, Crazy Golf and Grass Putting - Padstow
- Green’s Windmill and Science Centre - Sneinton, Nottingham
- Greenway - Galmpton near Brixham
- GreenWood Forest Park - Y Felinheli, Gwynedd
- Greyfriars House and Garden - Worcester
- Greylake RSPB Reserve - Greylake
- Greys Court - Rotherfield Greys, Henley-on-Thames
- Grime’s Graves - Lynford, Thetford
- Grimsby Fishing Heritage Centre - Grimsby
- Grosvenor Museum - Chester
- Gulliver’s Kingdom (Matlock Bath) - Matlock
- Gullivers Theme Park (Milton Keynes) - Milton Keynes
- Gullivers Theme Park (Warrington) - Warrington
- Gunby Hall and Gardens - Gunby, Spilsby
- Gunby Hall Estate: Monksthorpe Chapel - Monksthorpe, near Spilsby
- Gwinear Golf Pitch & Putt - Hayle
- Gypsy Wood Park - Bontnewydd, Caernarfon, Gwynedd
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