... if it falls in the mot free zone
I think the only way to be MOT free is to be a recovery vehicle or an agricultural one. There are restrictions on distance from base if you go the agri route.
I was told my 404 was MOT exempt when I bought it. Turns out it is not. This is not an issue though because, in my opinion, if it can't pass an MOT it should not be on the road anyway.
Ian