- Abba Voyage
- Abberton Reservoir Nature Reserve
- Abbeydale Industrial Hamlet
- Abbey Fields Play Park
- Abbey House Museum
- Abbey Leisure Complex
- Abbey Meadow Open Air Swimming Pool
- Abbey Park Evesham
- Abbey Park Leicester
- Abbey Road Studios
- Abbotsbury Playground
- Abbotsbury Subtropical Gardens
- Abbotsbury Swannery
- Abbott Lodge
- Aberaeron South Beach
- Aberavon Beach
- Aberconwy House
- Aberdeen Maritime Museum
- Aberdeen Science Centre
- Aberdeenshire Farming Museum
- Aberdeen Snowsports Centre
- Aberdeen Spy Mission Treasure Trail
- Aberdour Silver Sands
- Aberdulais Tinworks and Waterfall
- Aberdyfi Beach
- Abergavenny Castle & Museum
- Abergavenny Leisure Centre
- Abermawr Beach
- Aberporth Beach
- Abersoch Beach
- Aberystwyth Arts Centre
- Aberystwyth Mystery Treasure Trail
- Abington Museum
- Abington Park
- Abriachan Trails
- Absolutely Karting
- Absolutely Karting and Laser Tag
- Absolutely Karting Bristol
- Ace Karting Plus Indoor Race Track
- Achmelvich Bay
- Ackers Adventure
- Acocks Green Bowl
- Acorn Farm
- Actif Sport & Leisure
- Action Stations
- Action Tag Warfare Blackpool
- Active antz (Bracknell)
- Active Kids Adventure Park
- Active Monkeys Play Centre
- Active Reality Bath
- Active Reality Belfast West
- Active Reality Breckland
- Active Reality Bristol
- Active Reality Bristol
- Active Reality Cardiff
- Active Reality Cardiff
- Active Reality Henley-On-Thames
- Active Reality Merton
- Active Reality Newcastle
- Active Reality Steyning
- Active Reality Swindon
- Active Tameside
- Active Tots
- Activity World
- Acton Scott Working Farm
- Addison Howard Park
- Aden Country Park
- Admirals Park
- Adopt-a-Bear Experience
- Adrenaline Alley
- Adrenaline International Limited
- Adrenalin Quarry
- Adrenalin Rush Laser Combat
- Adrenalin Zone
- Adventure Alley
- Adventure Beyond
- Adventure Bristol Tree Tops High Ropes
- Adventure Dock Co.
- Adventure Dolphin Reading
- Adventure Golf Island Dunfermline
- Adventure Island Barry Island
- Adventure Island Mini Golf
- Adventure Island Play Centre
- Adventure Island Playpark
- Adventure Island Southend-on-Sea
- Adventure Kidz
- Adventureland
- Adventure Land
- Adventureland and Youth Gym
- Adventure Mini Golf
- Adventure Mini Village
- Adventure Now
- Adventure Planet
- Adventure Play at Blenheim Palace
- Adventure Play town
- Adventure Street
- Adventure Valley
- Adventure Wonderland
- Adventure Zone Battersea
- Adventure Zone Roehampton
- Adventure Zone Wandsworth
- Aerial Adventures East Kilbride
- Aerospace Bristol
- Aescwood Farm Childrens Riding School
- Afan Forest Park
- Africa Alive!
- Agnew Park
- Aillwee Cave
- Ainsdale Beach
- Aira Force
- Airbox Bounce
- Airfield Farm
- AirHop Bristol
- AirHop Chelmsford
- AirHop Colchester
- Airhop Guildford
- Air Kings Trampoline Park Scunthorpe
- Airport Bowl
- Air Raid Shelters
- Air Skate Park
- Airtastic Entertainment Centre Bangor
- Airtastic Entertainment Centre Cork
- Airtastic Entertainment Centre Craigavon
- Airtastic Entertainment Centre Newtownabbey
- Airtime Trampoline Park
- Air Trail
- Air Unlimited Inflatable Park
- Air Unlimited Trampoline and Inflatable Park
- AirVault Trampoline Park
- Airworld Aviation Museum
- Aladdins Kingdom Play Centre
- Aladdin The Musical
- A La Ronde
- Albany Leisure Centre
- Albert Dock Liverpool
- Albury Vineyard
- Alcumlow Hall Farm
- Aldborough Hall Equestrian Centre
- Aldenham Country Park
- Aldercarr Hall
- Alderford Lake
- Alderley Edge
- Aldersbrook Riding School
- Aldershot Military Museum
- Aldingbourne Country Centre
- Alexander Keiller Museum
- Alexandra Palace
- Alexandra Palace Theatre
- Alexandra Park Hastings
- Ali Bongos
- Alice Holt Forest
- Alice Holt Forest Bike Bike Hire
- Alice in Wonderland Afternoon Tea
- Alien Rock
- Alive Oasis
- All Bars Flying Trapeze Club
- Allen Gallery
- Allensford Country Park
- Allerthorpe Lakeland Park
- Allesley Park
- Alley Cats Indoor Play Centre
- Alleycatz
- AllHallows Beach
- Allihies Copper Mine Museum and Trail
- All Star Bounce NI
- All Star Lanes Brick Lane
- All Star Lanes Holborn
- All Star Lanes Westfield Stratford City
- All Things Wild Nature Centre
- Almondell and Calderwood Country Park
- Almond Valley Heritage Trust
- Alnmouth Beach
- Alnwick Castle
- Alpaca Evolution
- Alpaca Trekking with Bearhouse Alpacas
- Alpamare Water Park
- Alpine Snowsports Centre
- Alpine Snowsports Centre Southampton
- Alresford Spy Mission Treasure Trail
- Alter Rock Indoor Climbing and Activity Centre
- Alton Sports Centre
- Alton Towers
- Alton Watersports Centre
- Altrincham Garden Centre Soft Play
- Alyn Waters Country Park
- aMaizin Adventure Park and Farm
- Amazon Adventure
- Amazona Zoo
- Amazonia
- Amazonia Bolton
- Amberley Museum and Heritage Centre
- Amble Links Beach
- Ambleside Climbing Wall
- Amelia Trust Farm
- Amen Corner Karting
- American Museum & Gardens
- American School Bus Glamping
- Amersham Museum
- Amersham Spy Mission Treasure Trail
- Amerton Farm and Craft Centre
- Amerton Railway
- Ampthill Spy Mission Treasure Trail
- Amroth Beach
- Ancaster Leisure
- Anchors Away
- Anchorsawayplay
- Ancrum Outdoor Centre
- Anderby Beach
- Anderton Boat Lift
- and (&) Juliet
- Andover Leisure Centre
- Andover Museum
- Andrew Carnegie Birthplace Museum
- Andrew Lloyd Webber's Cinderella
- Angel of the North
- Angle Axe Throwing Peterborough
- Anglers Country Park
- Anglesey Abbey
- Anglesey Adventures
- Anglesey Sea Zoo
- Anglia Indoor Kart Racing
- Anglia Karting Centre
- Animal Farm Adventure Park
- Animal Quackers Park Farm
- Anker Wood at Dobbies
- Annaginny Farm Park
- Annan Beach
- Another World Adventure Centre
- Antony Gormleys Another Place
- Antony Woodland Garden
- Ants Inya Pants Play Centre
- Antz in your Pantz
- Apedale Valley Light Railway
- Apex Leisure and Wildlife Park
- Apley Playbarn
- Apollo Activities Centre
- Applecross Beach
- Apple Jack's Adventure Farm
- Applemore PlayZone
- Apple Tree Children's Cafe
- Apple Tree Studio
- Apple Tree Town
- Appley Park
- Aquadome
- Aqua Park Cardiff
- Aqua Park Lakeside
- Aqua Park Rutland
- AquaSplash
- Aquatec Motherwell
- Aqua Vale Swimming and Fitness Centre
- Arbeia Roman Fort
- Arbroath Signal Tower
- Arbroath Sports Centre
- Arbuthnot Museum
- Arcade Club Blackpool
- Arcadia Escape Room
- Arcains
- ArcelorMittal Orbit
- Archerfield Walled Garden
- Archery Legends Experience
- Archway Leisure Centre
- Arc Leisure
- Ardardan Estate
- Ardgillan Castle and Park
- Ardingly Activity Centre
- Ardkinglas Woodland Gardens
- Ardrossan Beach
- Area 25 Skatepark
- Arena 7
- Arena Pursuits
- Arethusa Climbing Centre
- Argaty Red Kites
- Argyll and Sutherland Highlanders Regime
- Arigna Mining Experience
- Ark Kidz
- Ark Open Farm
- Ark Wildlife & Dinosaur Park
- Arley Arboretum
- Arlington Court
- Armadale Castle & Grounds
- Armagh Planetarium
- Army Flying Museum
- Arnol Black House
- Arnold Palmer Crazy Golf
- Arnprior Farm Pumpkin Patch
- Arreton Craft Barns
- Arreton Down Wildlife Reserve
- Arrow Country Park
- Arrowdox
- Arsenal Emirates Stadium Tour
- Art4Fun
- Art and Mor Paint Your Own Pottery
- Art-Ful
- Art-K Bowes Park
- Art-K Dorking
- Art-K Hampstead
- Art-K High Barnet
- Art-K Reigate
- Art-K Reigate Spring Workshops
- Art-K Wimbledon
- Arty Boat
- Arty Goat
- Arundel Castle
- Arundel Lido
- Arundel Riding Centre
- Arun Leisure Centre
- Ascent Trampoline Park
- Ascot Racecourse
- Ashbourne Mystery Treasure Trail
- Ashbourne Recreation Ground
- Ashburton Swimming Pool
- Ashby de la Zouch Castle
- Ashby de la Zouch Museum
- Ashby Leisure Centre and Lido
- Ash & Co. Workshops
- Ashdown Forest
- Ash End House Children's Farm
- Ashford Leisure Trust
- Ashridge Estate
- Ashton Court Disc Golf Park
- Ashton Court Estate
- Askham Bryan Wildlife and Conservation Park
- Askham Outdoor Swimming Pools
- Aston Hall
- Aston Springs Farm
- Astounding Archaeological Inventions at Melksham Library
- Astrabound Play Centre
- ATBShop Skate Warehouse
- Athelhampton House and Gardens
- Athelstan Museum
- Athenry Castle
- Athenry Heritage Centre
- Athlone Leisure World
- Athlone Leisure World Laser Tag
- Atlantic Bowl
- Atlantic Pursuits
- Atlantis Adventure Park
- Atlantis Sport and Leisure Centre
- Atmosphere Trampoline Park
- Atom Trampoline Park
- Attenborough Nature Reserve
- At The Castle
- Attwell Farm Park Redditch
- Atwell Wilson Motor Museum
- Auchindrain Township Open Air Museum
- Auchingarrich Wildlife Centre
- Audley End House and Gardens
- Audley End Miniature Railway
- Aughnanure Castle
- Aunt Sandras Candy Factory
- Aura Navan Leisurelink
- Avago Karting Swinton
- Avalon Archaeology
- Avebury Stone Circle
- Avenham and Miller Park
- Average Joe's @NPC
- Avertical World Climbing Centre
- Aviemore Segway Treks
- Aviemore Spy Mission Treasure Trail
- Aviva Stadium
- Avoch Dolphin Trips
- avo craft cafe
- Avon Boating
- Avoncroft Museum of Historic Buildings
- Avon Heath Country Park
- Avon Tyrrell Outdoor Centre
- Avonvale MES Miniature Railway
- Avon Valley Adventure Wildlife Park
- Avon Valley Railway
- Away Resorts - Whitecliff Bay
- Awesome Walls Climbing Centre
- Awesome Walls Climbing Liverpool
- Awesome Walls Climbing Stockport
- Awesome Walls Climbing Stoke
- AWOL Adventure Activities
- AXED Nottingham
- Axe Valley Wildlife Park
- Axminster Heritage Centre
- Ayr Beach
- Aysgarth Falls
- Aztec Adventure Evesham
- Aztec Adventure Upton Warren
- Aztec Island Adventure Golf
- Aztec Soft Play