Itemised billing, walked through
Right now, a vet bill can arrive as a single total, or as a handful of broad lines like "treatment" and "medication" — enough to pay, but not always enough to see exactly what you were charged for and why.
The Competition and Markets Authority's draft Order changes that for bigger treatment pathways. Once Article 11 (written estimates) and Article 12 (itemised billing) take effect, any treatment pathway likely to cost £500 or more must come with a written estimate up front and an itemised bill afterwards — one that breaks the total down into its individual components rather than a single lump sum. Large veterinary businesses have roughly 9 months to comply (around June 2027), smaller businesses roughly 12 months (around September 2027); the £500 threshold itself is index-linked from 2028, so it rises with inflation rather than staying fixed.
To make that concrete: a routine dental procedure requiring general anaesthetic might currently show up as one line — "Dental treatment: £380". Under itemised billing, the same treatment would typically break down into something closer to: a consultation/pre-op check, pre-operative blood tests, the general anaesthetic itself, the dental procedure (assessment, scale and polish), any extractions if needed, post-operative pain relief, and a follow-up check. (The figures above are illustrative, not a real invoice — the point is the structure, not a specific price.)
That breakdown matters for two reasons. First, it lets you compare the same individual component — the anaesthetic, say — between practices, rather than comparing two different bundles that happen to add up to similar totals. Second, it's the same structure this site already asks practices to publish for the CMA's 36 defined services, several of which (dental, castration, spay) require exactly this kind of component checklist to be disclosed up front — general anaesthesia, sedation, pain relief, hospitalisation, blood tests, and check-ups each marked included or not, rather than left ambiguous.