Hi. I am in the process of selling a property

if the transfer is made with a telegraphic transfer, in the SEPA circuit, as long as the UK is still in the EU - the transfer time is almost immediate, and in any case the CRO (interbank transfer code) is a valid guarantee that the payment is been actually carried out - Of course, whoever sends the money will be forced to pay the bank costs, which could be NOT irrelevant -

The notary should make it all watertight in the text of the atto, so you can hand over the keys when you sign the the act of sale.