Royal College of Veterinary Surgeons, Guide to Professional Conduct
Legislation quotes relevent to therapies offered on this site, taken from the Royal College of Veterinary Surgeons website, ‘Treatment of Animals by Non-Veterinary Surgeons’:

Physiotherapists*, osteopaths and chiropractors

19.12. The Veterinary Surgery (Exemptions) Order 1962 allows for the treatment of animals by physiotherapy, provided that the animal has first been seen by a veterinary surgeon who has diagnosed the condition and decided that it should be treated by physiotherapy under his/her direction.

*Definition of Physiotherapy according to the RCVS: ‘Physiotherapy’ is interpreted as including all kinds of manipulative therapy. (section 19.13)