Barquentine, I was always very aware that this could happen and also that it is very easy to make a mistake when entering the bank code and account number, so like many people when paying a new person I have always sent just £1 to make sure the payment goes to the right person.
These mistakes have been highlighted in the press many times over the years and the advice to make a small initial payment has been well publicised, too.
Hopefully all UK based banks will adopt the new system of name checking but we should still take steps to protect ourselves.