- Kaos Indoor High Wire Adventure - Lytham
- Kedleston Hall - near Quarndon, Derby
- Kelmarsh Hall and Gardens - Kelmarsh, Northampton
- Kendal Museum - Kendal
- Kenilworth Castle and Elizabethan Garden - Kenilworth
- Kew Gardens - Richmond
- Kids Kingdom - Southend-on-Sea
- Kids Play Bury St Edmunds - Bury St Edmunds
- Kids2Day - Eastleigh
- Kidz About - Swindon
- Kidzworld Cornwall - St Austell
- Kielder Water and Forest Park - Kielder
- Kielder Water Bird of Prey Centre - Kielder, Hexham
- Kikiland - Maidstone
- Kiki’s Kabin - North Shields
- Killhope – The North of England Lead Mining Museum - Upper Weardale
- King Arthur’s Labyrinth - Corris, Machynlleth, Powys
- King Edward Mine Museum - Troon, Camborne
- King John’s Hunting Lodge - Axbridge
- Kingsley Bird and Falconry Centre - Kingsley, nr Cheadle
- Kingston Lacy - Wimborne Minster
- Kingston Maurward Gardens and Animal Park - Dorchester
- Kirby Hall - Corby
- Kirby Muxloe Castle - Kirby Muxloe
- Kirkley Hall Zoological Gardens - Ponteland
- Kirkstall Abbey - Kirkstall, Leeds
- Kirriemuir Camera Obscura - Kirriemuir, Angus
- Knaresborough Castle and Museum - Knaresborough
- Knebworth House - Knebworth
- Knightshayes Court - Bolham, Tiverton
- Knockhatch Adventure Park - Hailsham
- Knowsley Safari Park - Prescot
- Krazy Play Days - Reading
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z