Hi,sorry,bit late in the chat but your right.The ministry will allocate a local vet who will test for tb and brucellociss at the same time.It only takes a few minutes and they just draw a little blood to send away to be tested.This is a free service.
Depending what area you arein the country you tast at diffrent intervils,mine is evey 4yrs as is low risk whereas some are every yrwith tests on off movements also.
If you register at bcms gateway for animal movement it makes it earier.
If you need any help,just ask,you will enjoy your cattle.