The efficacy and diagnostic accuracy of a new desk-top feline blood typing kit was evaluated by comparing the results of the kit with traditional blood typing methods on 35 feline blood samples. The kit was then used to blood type 139 non-pedigree cats from Scotland and the north of England and 207 pedigree cats from throughout the UK. Of the non-pedigree cats, 87×1 per cent were type A, 7·9 per cent were type B and 5·0 per cent were type AB, while of the pedigree cats, 54·6 per cent were type A, 40·1 per cent were type B and 5·3 per cent were type AB. The majority (121 out of 207) of these pedigree cats were British shorthaired, of which 39·7 per cent were type A, 58·7 per cent were type B and 1·6 per cent were type AB. No cats were identified that failed to express the type A and/or type B antigens. The prevalence of type AB cats appears to be higher in this study than previously reported. The prevalence of blood types within specific pedigree breeds in the UK appears to vary from that reported elsewhere.