Halifax customers who have not switched or closed their current or credit card accounts will have their cards and accounts deactivated this evening.
Some 21 Halifax branches are to close today, with the remaining 23 closing next Wednesday.
In February, Halifax, which is owned by Bank of Scotland (Ireland) announced its plans to close its 44 retail branches with the loss of 750 jobs.
Halifax would not confirm yesterday how many customers have yet to switch their account. The bank has an estimated 50,000 current account and 50,000 credit card customers.
