ok, i was reading this and have been freaking out because i dont know if my vet is accredited, however on the defra website it says
'make sure your vet correctly completes section I to V of the cerfiticate and enters his/her details in the following box. if the vet is not a government apporved vet, the certificate must also be dated and stamped by a vet authorised by the competant authority'
So it seems it doesnt matter which vet does the blood test etc as long as its authorised by the USDA vet.