Check your bank has Faster Payments (I think nearly if not all do by now) and do it via online banking. Honestly this is the quickest and easiest way for all and 100% safe as funds clear instantly. Works for payments upto £10k, usually with a daily limit of £10k, so no doing multiple transfers.
Wouldnt accept cheque, bankers draft or cash, all can be faked far too easily. Faster payments all the way
We did this with the Ibiza. Got buyer to log onto bank and transfer money while we there. Then we logged on and saw it was there. Then signed the bits of the V5.