I have never imported animals but have exported and the process is the same either way
1) Find sheep and make sure farmer is able to and willing to go through export process
2) Export certificate will demand disease status conformation --MV , scrapie etc as well as isolation periods pre export
3) get export certificate (just a few forms
4) vet inspection
5) Pick up animals in ministry approved vehicle driven by approved driver
6)get them home and get them inspected by UK vet
There are firms that will do this for you --- Mike Adams is one
[email protected]