I started with Highland cattle just over a year ago. I now have four and am hoping to add to this at the weekend. You need to have a holding number as with any stock. Then you need a herd no. You need to register with DEFRA for cattle and most of the paperwork can be done online. They send you loads of information about TB etc and sticky labels to put on passports - although movements can be done online as also births can be notified online. You will be notified after about 9 months of keeping cattle about TB testing. This will be done every 12 months for the first 3 years as it is classed as a new herd and then you will go onto your parish testing. Mine is every 4 years but some are 3, 2, or even yearly depending on the incidence. Other records are as for any animals eg medicine records, batch numbers, where you purchased from etc. If you decide to keep cattle do your research regarding paperwork first as it can be worrying playing catch up. Contact me if you want more specific information.