Ok I was expecting this to be honest with being RHD. But just had a call from Tesla regarding a my M3 reservation / Ms test drive, and they said 2018 would be the very earliest the M3 will be in the UK. They almost didn't actually give me a test drive in the Ms because I had reserved the M3 which was a bit surprising, she said it's due to the M3 pricing not being available? (I assume it's more that they have too much interest and not enough sales staff). I did say I was also interested in the Ms in the mean time, I think this is the only reason I got the test drive in the end.