| Companion Care (Derby) Limited | Professional & scientific | 2001 |
| Companion Care (Dunstable) Limited | Professional & scientific | 2002 |
| Companion Care (Eastbourne) Limited | Professional & scientific | 2008 |
| Companion Care (ELY) Limited | Professional & scientific | 2002 |
| Companion Care (Enfield) Limited | Professional & scientific | 2013 |
| Companion Care (Exeter Marsh) Limited | Professional & scientific | 2012 |
| Companion Care (Falmouth) Limited | Professional & scientific | 2014 |
| Companion Care (Fareham Collingwood) Limited | Professional & scientific | 2011 |
| Companion Care (Fareham) Limited | Professional & scientific | 2001 |
| Companion Care (Farnborough) Limited | Professional & scientific | 2011 |
| Companion Care (Farnham) Limited | Professional & scientific | 2011 |
| Companion Care (Folkestone) Limited | Professional & scientific | 2012 |
| Companion Care (Fort Kinnaird) Limited | Professional & scientific | 2011 |
| Companion Care (Friern Barnet) Limited | Professional & scientific | 2013 |
| Companion Care (Gloucester) Limited | Professional & scientific | 2012 |
| Companion Care (Harlow) Limited | Professional & scientific | 2001 |
| Companion Care (Hatfield) Limited | Professional & scientific | 2013 |
| Companion Care (Hemel Hempstead) Limited | Professional & scientific | 2012 |
| Companion Care (High Wycombe) Limited | Professional & scientific | 2010 |
| Companion Care (Hove) Limited | Professional & scientific | 2011 |
| Companion Care (Huntingdon) Limited | Professional & scientific | 2011 |
| Companion Care (Ilford) Limited | Professional & scientific | 2011 |
| Companion Care (Ipswich Martlesham) Limited | Professional & scientific | 2012 |
| Companion Care (Keighley) Limited | Professional & scientific | 2012 |
| Companion Care (Kidderminster) Limited | Professional & scientific | 2011 |
| Companion Care (Kirkcaldy) Limited | Professional & scientific | 2011 |
| Companion Care (Leicester Beaumont Leys) Limited | Professional & scientific | 2013 |
| Companion Care (Leicester Fosse Park) Limited | Professional & scientific | 2010 |
| Companion Care (Leighton Buzzard) Limited | Professional & scientific | 2012 |
| Companion Care (Linwood) Limited | Professional & scientific | 2010 |
| Companion Care (Lisburn) Limited | Professional & scientific | 2012 |
| Companion Care (Liverpool Penny Lane) Limited | Professional & scientific | 2013 |
| Companion Care (Livingston) Limited | Professional & scientific | 2001 |
| Companion Care (Llantrisant) Limited | Professional & scientific | 2012 |
| Companion Care (Macclesfield) Limited | Professional & scientific | 2012 |
| Companion Care (Maidstone) Limited | Professional & scientific | 2004 |
| Companion Care (Merry Hill) Limited | Professional & scientific | 2014 |
| Companion Care (Milton Keynes) Limited | Professional & scientific | 2001 |
| Companion Care (New Malden) Limited | Professional & scientific | 2005 |
| Companion Care (Newbury) Limited | Professional & scientific | 2013 |
| Companion Care (Newcastle Kingston Park) Limited | Professional & scientific | 2012 |
| Companion Care (Newport) Limited | Professional & scientific | 2013 |
| Companion Care (Northampton Nene Valley) Limited | Professional & scientific | 2011 |
| Companion Care (Norwich Hall Road) Limited | Professional & scientific | 2008 |
| Companion Care (Norwich Longwater) Limited | Professional & scientific | 2011 |
| Companion Care (Norwich) Limited | Professional & scientific | 2002 |
| Companion Care (Nottingham) Limited | Professional & scientific | 2001 |
| Companion Care (Oldbury) Limited | Professional & scientific | 2011 |
| Companion Care (Oldham) Limited | Professional & scientific | 2001 |
| Companion Care (Orpington) Limited | Professional & scientific | 2009 |
| Companion Care (Oxford) Limited | Professional & scientific | 2009 |
| Companion Care (Perth) Limited | Professional & scientific | 2012 |
| Companion Care (Peterborough Bretton) Limited | Professional & scientific | 2013 |
| Companion Care (Plymouth) Limited | Professional & scientific | 2010 |
| Companion Care (Preston Capitol) Limited | Professional & scientific | 2013 |
| Companion Care (Pudsey) Limited | Professional & scientific | 2001 |
| Companion Care (Reading) Limited | Professional & scientific | 2011 |
| Companion Care (Redditch) Limited | Professional & scientific | 2009 |
| Companion Care (Redhill) Limited | Professional & scientific | 2010 |
| Companion Care (Romford) Limited | Professional & scientific | 2001 |
| Companion Care (Rotherham) Limited | Professional & scientific | 2012 |
| Companion Care (Rustington) Limited | Professional & scientific | 2003 |
| Companion Care (Salisbury) Limited | Professional & scientific | 2007 |
| Companion Care (Scarborough) Limited | Professional & scientific | 2008 |
| Companion Care (Services) Limited | Administrative & support | 2001 |
| Companion Care (Slough) Limited | Professional & scientific | 2010 |
| Companion Care (Southampton) Limited | Professional & scientific | 2008 |
| Companion Care (Southend-On-Sea) Limited | Professional & scientific | 2011 |
| Companion Care (Speke) Limited | Professional & scientific | 2010 |
| Companion Care (Stevenage) Limited | Professional & scientific | 2012 |
| Companion Care (Stirling) Limited | Professional & scientific | 2010 |
| Companion Care (Stockport) Limited | Professional & scientific | 2001 |
| Companion Care (Stoke Festival Park) Limited | Professional & scientific | 2013 |
| Companion Care (Stratford-Upon-Avon) Limited | Professional & scientific | 2010 |
| Companion Care (Swansea) Limited | Professional & scientific | 2001 |
| Companion Care (Swindon) Limited | Professional & scientific | 2009 |
| Companion Care (Tamworth) Limited | Professional & scientific | 2005 |
| Companion Care (Taunton) Limited | Professional & scientific | 2010 |
| Companion Care (Telford) Limited | Professional & scientific | 2002 |
| Companion Care (Truro) Limited | Professional & scientific | 2008 |
| Companion Care (Tunbridge Wells) Limited | Professional & scientific | 2010 |
| Companion Care (Wakefield) Limited | Professional & scientific | 2011 |
| Companion Care (Weston-Super-Mare) Limited | Professional & scientific | 2007 |
| Companion Care (Winchester) Limited | Professional & scientific | 2006 |
| Companion Care (Winnersh) Limited | Professional & scientific | 2013 |
| Companion Care (Woking) Limited | Professional & scientific | 2005 |
| Companion Care (Woolwell) Limited | Professional & scientific | 2012 |
| Companion Care (Worcester) Limited | Professional & scientific | 2010 |
| Companion Care (Wrexham Holt Road) Limited | Professional & scientific | 2013 |
| Companion Care Management Services Limited | Administrative & support | 2014 |
| Consett Vets for Pets Limited | Professional & scientific | 2026 |
| Corby VETS4PETS Limited | Professional & scientific | 2012 |
| Cosmetic Cryotherapy Ltd | Other services | 2026 |
| Covid Claims Limited | Financial services | 2021 |
| CPD GS Group Ltd | Professional & scientific | 2025 |
| Craigavon VETS4PETS Limited | Professional & scientific | 2014 |
| Craigleith VETS4PETS Limited | Professional & scientific | 2017 |
| Crescent Link VETS4PETS Limited | Professional & scientific | 2016 |
| Crewe VETS4PETS Limited | Professional & scientific | 2014 |
| Cross Hands VETS4PETS Limited | Professional & scientific | 2018 |