Thank you all for your comments and suggestions.
I'm pleased to report that I now have one car less and the faster payments transfer worked a treat. The payment process took no more than 15 minutes this morning during which the buyer had to respond to a text and a phone call from his bank's security to confirm that it wasn't a fraudulent use of his account.

I'm pleased to report that I now have one car less and the faster payments transfer worked a treat. The payment process took no more than 15 minutes this morning during which the buyer had to respond to a text and a phone call from his bank's security to confirm that it wasn't a fraudulent use of his account.