The Vee is NOT banned from the UK... there is just not enough market for them... most people who want a bg bike, go and get a well known make... like Honda (Pan of Deville), Yammy (FJRs) or Kwaki (GTRs)...
... the only thing is that they are a little on the high side, for emissions... but being a bike, they are NOT measured yet.. so that don't matter....