Hi Ive found NFU and KBIS both good in the past. As someone above said its more for the liability and vets fees for me at this stage. I think if you can prove a higher market value in writing by an independent professional then you may be able to get a higher value if you want it.
I see this post is quite old now but I just want to say for the sake of balance for anyone looking to move yards. Ive been a livery at Withington Manor for nearly 8 years, so as you can tell I love it and I'm not the only one whos been there a long time. I have seen some very 'weird' livery...