- Castle Gate
- Castle Grove Gymnastics Club
- Castle Hedingham Bowls Club
- Castle Hedingham Cricket Club
- Castle Hedingham Scout Group
- Castle Hedingham Tennis Club
- Castle Hill High School - Stockport
- Castle Hill Infant and Junior School Ipswich - PTA
- Castle Hill Pre-School - Basingstoke
- Castle Hill Primary School - Basingstoke
- Castle Hill Primary School, Bolton
- Castle Hill Primary School, Brockworth
- Castle Hill School - Huddersfield
- Castle Hockey Club
- Castle House Museum
- Castle House School, Newport Shrops
- Castle Juniors 2016
- Castle Juniors Football Club
- Castle Kennedy Primary School PTA
- Castle Korfball Club
- Castle Loch Lochmaben Community Trust
- Castle Lodge Care Home Comfort Fund
- Castle Manor Academy - Suffolk
- Castle Mead Academy, Leicester
- Castle Mead School - Trowbridge
- Castle Newnham School PTA
- Castle Nursery School - Kenilworth
- Castle Park Arts Centre
- Castle Park Juniors
- Castle Point Association of Voluntary Services Children's Services
- Castle Point Athletic
- Castle Point Bowling Club
- Castle Point Joggers
- Castle Point Social Car Scheme
- Castle Pre-School Broughton & North Newington
- Castle Pre-School ltd - Portsmouth
- Castle Rowing Club
- Castle Roy Trust
- Castle School - Cambridge
- Castle School Friends - Thornbury
- Castle School South Africa & Lesotho 2026 - Kira Pogrebnova
- Castle School South Africa Trip - Elise Veale
- Castle School World Challenge - Dixsa Purgas-O'Sullivan
- Castle Semple Rowing Club
- Castle Semple Sailing Club
- Castle Street Centre Association
- Castle Street Dance Studios
- Castle Tavern FC
- Castle United
- Castle Vale Olympic
- Castle Vale Spitfires FC
- Castle Vale Town FC
- Castle Vale Town Ladies FC
- Castle View School - Essex
- Castle View Stables
- Castle Youth Football Club
- Castlebrook High School
- Castlechurch Primary School
- Castlecombe Primary School - Mottingham
- Castlecroft FC
- Castlecroft Residents Association
- Castledon Greyhound Rescue
- Castledyke Primary School, Barton-upon-Humber
- Castlefield Dog Rescue
- Castlefield School Fund - High Wycombe
- Castlefield School PTA ,High Wycombe
- Castleford All Stars Community Gymnastics Club
- Castleford And Pontefract District Lions Club
- Castleford Boxing Academy
- Castleford Cancer Self Help Group
- Castleford Comets Junior Netball Club
- Castleford Comets Netball Club
- Castleford Cricket Club
- Castleford Hedgehog Rescue
- Castleford Heritage Trust
- Castleford Lock Lane RL & Sports Club
- Castleford Panthers Rugby Club
- Castleford Panthers Under 9's Rugby League Team
- Castleford Phoenix Theatre
- Castleford RUFC
- Castleford Sea Cadets
- Castleford Team Parish
- Castleford Tigers Foundation
- Castleford Town 13's Football Club
- Castleford Town Bowling Club
- Castleford Town Girls JFC u7s
- Castleford Town Jfc U10’s Sponsor Money
- Castleford White Rose Ladies
- Castleford YMCA
- Castleford Young Musicians
- Castlegate Care Home
- Castlehaven Community Association
- Castlehill Primary School - Glasgow
- Castlehill School Association - Cupar
- Castlehold Baptist Church
- Castlemartin Village Hall - Pembroke
- Castlemilk Community Transport
- Castlemilk Day Nursery
- Castlemilk FA 2017s
- Castlemilk Parish Church
- Castlemilk Youth Complex
- Castlemorton Primary School Friends
- Castlepark Early Years Centre
- Castlereagh Spartans Ice Hockey Club
- Castlerigg Manor
- Castlerock Scout Group
- Castleside Horse & Groom FC
- Castleside Primary School
- Castleside Village Hall
- Castlethorpe & Hanslope Community First Responders
- Castleton Bowling Club
- Castleton High Peak Womens Institute
- Castleton Primary School Rochdale PTA
- Castleton Primary School, Leeds
- Castletown Athletic Jfc
- Castletown Community Project
- Castletown Cricket Club
- Castletown Football Club
- Castletown Hockey Club
- Castletown Lawn Tennis Club
- Castletown Scouts
- Castletown juniors u9’s - Penrith
- Castleview Primary Nursery Class - Edinburgh
- Castleview Primary Parents and Carers - Stirling
- Castleview Primary School - Lancaster
- Castleview School, Slough
- Castlewellan Community Playgroup
- Castlewellan Town FC
- Castlewood Primary School - Horsham
- Caston Village Hall Charitable Trust
- Castor & Ailsworth Cricket Club
- Castor & Ailsworth St Kyneburgha PCC
- Castor & Ailsworth Tennis Club
- Castor & Ailsworth Village Hall
- Castor and Ailsworth Pre-School
- Casual Minds Matter CIC
- Casus Pax
- Cat & Rabbit Rescue Centre - Sidlesham
- Cat Action Trust (Pembrokeshire Branch)
- Cat Action Trust 1977 - Doncaster South branch
- Cat Action Trust 1977 Aberdeenshire
- Cat Action Trust 1977 Ayrshire Branch
- Cat Action Trust 1977 Headquarters
- Cat Action Trust 1977 Jersey Branch
- Cat Action Trust 1977 Leeds
- Cat Action Trust North East Scotland
- Cat Action Trust West Wales
- Cat Aid Team Feral-Friends
- Cat Among The Pigeons
- Cat And Kitten Rescue - Rachel Broughton
- Cat Assist Team Whitchurch
- Cat Chat - the Cat Rescue Resource
- Cat Concern
- Cat Concern Guernsey
- Cat Drescher trip to Lourdes
- Cat Friends of Hyndburn
- Cat Homing and Rescue
- Cat Lady TNR
- Cat MSc fund
- Cat Patrol Rescue
- Cat Paws Dalyan
- Cat Protection Pollensa
- Cat Rescue & Welfare Trust
- Cat Rescue Monastery Akrotiri
- Cat Rescue UK
- Cat Rescue West Wales
- Cat Theatre Company
- Cat Village North Rescue
- Cat Watch Rescue Shelter
- Cat Welfare Luton
- Cat Welfare Wisbech
- Cat and Kitten Rescue (3 Counties +)
- Cat and Kitten Rescue - In Memory of Sassy James 1999 - 2011
- Cat been hit by a car
- Cat operation - Jane Piddock
- Cat welfare charities
- Cat's Guidance
- Cat's Uni Fund
- Cat's Uni Funds
- Cat-CHING
- Cat-Line Creta
- Cat-titude n Whiskers Cat Rescue
- CatZero Limited
- Catalans F.C
- Catalans UK
- Catalina Reed - Machu Pichu Challenge - Amnesty International
- Catalyst 4 Change CIC
- Catalyst Allstars CIC
- Catalyst Creates CIC
- Catalyst Dance school
- Catalyst Ministries
- Catalyst Ministries UK (YWAM)
- Catalyst Psychology
- Catalyst Stockton
- Catalyst Support
- Catalyst Tavistock
- Catalyst Writing Services Ltd
- Cataracts Are Curable - The Gambian Project
- Catch Leeds
- Catch The Fire Manchester
- Catch the Dream CIC
- Catch the Fire London
- Catch-Up & Play CIC
- Catch22
- Catch22 Humberside
- Catchgate & Annfield Plain Community Sports Club
- Catchinglives
- Catchpoint
- Catchpole Court Nursing Home
- Catcliffe Primary School, Rotherham
- Catcott Primary School, Bridgwater
- Catcott School PTA - Bridgwater
- Catcuddles
- Catenaccio JFC
- Catenian Association Bursary Fund
- Caterham Community Association
- Caterham Football Club
- Caterham Overseas Aid Trust
- Caterham Pumas YFC
- Caterham School - Surrey
- Caterham Sea Cadets
- Caterham, Oxted and Godstone Lions Club
- Caterpillar Club - Swindon
- Caterpillar Day Nursery, Market Harborough
- Caterpillar Football Club
- Caterpillar Nursery (Leamington Spa)
- Caterpillar's Childcare - Wales
- Caterpillars - Barton Seagrave
- Caterpillars Childminding - Birmingham
- Caterpillars Montessori Preschool - Hartley Wintney
- Caterpillars Pre-School - Calmore
- Caterpillars PreSchool - Poole
- Caterpillars Preschool Marks Tey - Colchester
- Caterpillars to Butterflies Pre School
- Catey Preschool
- Catfield Kittens Pre-School - Gt Yarmouth
- Catford Fridge
- Catford Wanderers
- Cathal Brugha Water Polo Club
- Cathartic CIC
- Cathay Care Home - Forres
- Cathays And Central Youth And Community Project
- Cathays Brass
- Cathays RFC
- Cathays Rugby Club
- Cathcart Baptist Church
- Cathcart Bowling Club
- Cathcart Street Primary School
- Cathcart Youth Ministry Partnership
- Cathedral Academy - Wakefield
- Cathedral Archer Project - Sheffield
- Cathedral Primary Fundraising Committee - Motherwell
- Cathedral Primary School PTA - Bristol
- Catherine
- Catherine Brown School of Highland Dance
- Catherine Davies Runs the London Marathon for Oxfam
- Catherine Ferrer-Jempson Fundraising For St Catherine's Hospice
- Catherine Male IVF Fundraiser
- Catherine May
- Catherine Melrose for Anthony Nolan
- Catherine Thompson London Marathon 2020 raising funds for MND
- Catherine Uni Fund
- Catherine Wayte Primary School PTA
- Catherine de Barnes Village Hall
- Catherine's University Fund
- Catherine’s Childcare
- Catherington Infant School Association
- Cathkin Community Nursery - Glasgow
- Cathkin Primary School, Glasgow
- Catholic Association
- Catholic Blind Institute
- Catholic Care
- Catholic Chaplaincy At The University Of Kent.
- Catholic Charities - Archdiocese of Birmingham
- Catholic Children's Society (Plymouth)
- Catholic Children's Society (Westminster)
- Catholic Church The Immaculate Conception - Eppping
- Catholic Concern for Animals
- Catholic Deaf Association
- Catholic Guides of Ireland Northern Region
- Catholic Mothers Apostolate
- Catholic Parish of All Saints Newport
- Catholic Parish of King's Lynn
- Catholic Parishes - Solihull
- Catholic United Minors YFC
- Catholic United Veterans Football Club
- Cathrin Claussen raising for Motor Neuron Disease Support for Matthew
- Cathy Caton - 2021
- Cathy Does Tanzania
- Cathy Snell fundraising for Motor Neurone Disease Association
- Catitude Cat Rescue
- Catmose Primary School, Oakham
- Caton Primary School
- Caton St Paul's PTA - Lancaster, Brookhouse
- Caton Utd Football Club
- Catrine Community Trust
- Catrine Early Childhood Centre
- Catrine Primary School, Mauchline
- Catriona Hargreaves Charitable Trust
- Catriona Merry - 2022
- Cats & Dogs Lost Found In Dorset
- Cats 7’s Rugby
- Cats Action Trust (N&W Wilts)
- Cats Galore
- Cats Holiday Home
- Cats In Need Lincs
- Cats Kitty
- Cats Lost and Found Grimsby
- Cats Nottingham Rescue
- Cats Protection (Mitcham)
- Cats Protection (North London)
- Cats Protection - Anglia Coastal
- Cats Protection - Bracknell & Wokingham Districts Branch
- Cats Protection - Breckland
- Cats Protection - Cambridge
- Cats Protection - Caterham, Redhill & East Surrey
- Cats Protection - Central Dumfries Branch
- Cats Protection - Cornwall
- Cats Protection - Crawley, Reigate & District
- Cats Protection - Derby Adoption Centre
- Cats Protection - Dereham Adoption Centre
- Cats Protection - Devon Cat Centre
- Cats Protection - Eltham, SIdcup and District branch
- Cats Protection - Epsom, Ewell & District
- Cats Protection - Eskdale & District Branch
- Cats Protection - Evesham adoption centre
- Cats Protection - Framlingham & Saxmundham
- Cats Protection - Friends of Eastbourne Adoption Centre
- Cats Protection - Glastonbury & Wells
- Cats Protection - Haslemere
- Cats Protection - Honiton
- Cats Protection - Kent
- Cats Protection - Launceston
- Cats Protection - Leicester & County Branch
- Cats Protection - Lichfield and Tamworth
- Cats Protection - Mid Kent
- Cats Protection - Mid Sussex
- Cats Protection - Mid Warwickshire
- Cats Protection - Perth
- Cats Protection - Peterborough Branch
- Cats Protection - Plymouth
- Cats Protection - Portsmouth
- Cats Protection - Preston
- Cats Protection - Redbridge
- Cats Protection - Sheffield & District
- Cats Protection - Skegness and District
- Cats Protection - South East Cornwall
- Cats Protection - Southampton
- Cats Protection - Southend
- Cats Protection - Stranraer & District
- Cats Protection - Swale
- Cats Protection - Tunbridge Wells, Crowborough and District
- Cats Protection - Tyneside Adoption Centre
- Cats Protection - West Lothian
- Cats Protection - Weston-Super-Mare & District
- Cats Protection - Wimborne
- Cats Protection Alness & District Branch
- Cats Protection Ardnamurchan and Mull Branch
- Cats Protection Armagh
- Cats Protection Atherton & Wigan Branch
- Cats Protection Ballymena Branch
- Cats Protection Barnsley Branch
- Cats Protection Basingstoke & District
- Cats Protection Bath & District
- Cats Protection Bedford & Biggleswade Branch
- Cats Protection Bexley & District Branch
- Cats Protection Big Cat Trek India 2018 - Abigail Doust
- Cats Protection Birmingham Adoption Centre
- Cats Protection Blackheath & Deptford
- Cats Protection Bolton & Radcliffe
- Cats Protection Boston & District
- Cats Protection Bournemouth
- Cats Protection Bridgend Adoption Centre
- Cats Protection Brighton and District
- Cats Protection Bristol & District Branch
- Cats Protection Bromley
- Cats Protection Bury St Edmunds & Stowmarket
- Cats Protection Caithness
- Cats Protection Camberley Branch
- Cats Protection Carmarthenshire
- Cats Protection Charity Shop Teignmouth
- Cats Protection Chelmsford
- Cats Protection Chesterfield
- Cats Protection Cornwall
- Cats Protection Coventry
- Cats Protection Crewe & District
- Cats Protection Deal & District
- Cats Protection Dorset Cat Centre
- Cats Protection Downham Market Adoption Centre
- Cats Protection Downpatrick Branch
- Cats Protection East Devon Branch
- Cats Protection Epping Forest
- Cats Protection Exeter Branch
- Cats Protection Falmouth, Helston
- Cats Protection Forest of Dean Branch
- Cats Protection Forth Valley Adoption Centre
- Cats Protection Giffnock & District Branch
- Cats Protection Gildersome
- Cats Protection Glasgow Adoption Centre..
- Cats Protection Glasgow Branch
- Cats Protection Gosport Branch
- Cats Protection Greater Belfast
- Cats Protection Greenwich Branch
- Cats Protection Grimsby
- Cats Protection Guildford & Godalming
- Cats Protection Halifax, Huddersfield & Wakefield
- Cats Protection Harrogate
- Cats Protection Harrow
- Cats Protection Haverhill
- Cats Protection Hemel Hempstead/Berkhamsted Branch
- Cats Protection Hereford Adoption Centre
- Cats Protection High Wycombe and South Bucks
- Cats Protection Hillingdon
- Cats Protection Hornchurch & District Branch
- Cats Protection Horsham & District
- Cats Protection Hull
- Cats Protection IOW Adoption Centre
- Cats Protection Ibstock
- Cats Protection Inverness
- Cats Protection Ipswich
- Cats Protection Lea Valley Branch
- Cats Protection Luton Dunstable & District
- Cats Protection Macclesfield Branch
- Cats Protection Manchester
- Cats Protection Midsomer Norton
- Cats Protection Milton Keynes Branch
- Cats Protection Moray
- Cats Protection Newbury
- Cats Protection Newtown & District Branch
- Cats Protection North Birmingham
- Cats Protection North Bristol Branch
- Cats Protection North Herts
- Cats Protection North Wales Cat Centre
- Cats Protection North Wirral
- Cats Protection Northern Ireland Cat Centre
- Cats Protection Northumbria
- Cats Protection Nottingham
- Cats Protection Peterhead & District
- Cats Protection Rayleigh
- Cats Protection Retail Charity Shop - Bristol & District
- Cats Protection Salisbury
- Cats Protection Scotland Cat Centre
- Cats Protection Scunthorpe
- Cats Protection Shetland
- Cats Protection South Birmingham
- Cats Protection South Wirral Branch
- Cats Protection Spalding & District Branch
- Cats Protection St Albans & District
- Cats Protection Stamford
- Cats Protection Stone Charity Shop
- Cats Protection Strathspey Branch
- Cats Protection Sutton, Kingston & District
- Cats Protection Swindon
- Cats Protection Tain & District Branch
- Cats Protection Taunton and Minehead
- Cats Protection Teesside Branch
- Cats Protection Telford & District Branch
- Cats Protection Tendring & District
- Cats Protection Three Rivers and Watford Branch
- Cats Protection Walsall Borough
- Cats Protection Waltham Forest
- Cats Protection Warrington Adoption Centre
- Cats Protection Welwyn/Hatfield District Branch
- Cats Protection Weymouth& District Branch
- Cats Protection Woking And District
- Cats Protection Wolverhampton
- Cats Protection Worcester & District
- Cats Protection Yeovil And District
- Cats Protection York Adoption Centre
- Cats R Us
- Cats Welfare Tenerife
- Cats in Crisis - Lincoln
- Cats in Crisis - Thanet
- Cats in Crisis Epsom
- Cats in Distress
- Cats in Need - West Yorkshire
- Cats protection St Helens Adoption Centre
- Cats, Kittens Care - Sarah Wilkinson
- CatsMatter
- Catsfield Village Hall
- Catsfield pre-school
- Catshill Gladiators
- Catshill Gladiators U7
- Catshill U9’s
- Catshill Village Hall - CVH
- Catterall Gala
- Catterick Boxing Club
- Catterick Garrison Football Club U7s
- Catterick Garrison Guides
- Catterick Garrison Preschool Group
- Catterick Garrison Saddle Club
- Catterick Golf Club Junior Section
- Catterick Rovers FC
- Catterick Touch Rugby
- Catterick Village Junior Football Club
- Catterick Village Pre-School - Richmond
- Catterline School Parents Group
- Cattewater Gig Club - Plymouth
- Cattistock Community Fund
- Cattistock Tennis Club
