About 60 Bank Branches are closing every month with RBS shutting the most, consumer group Which? has warned.
It called the trend "alarming" and said many people were left without proper access to services.
But banks said their branches were losing customers as more people banked online.
According to Which?, the worst offenders are:
- RBS, which will close 350 of its own branches in 2015-2018, as well as 638 NatWest branches and 35 Ulster Bank branches
- Lloyds, which is closing 366 of its own branches, 87 Bank of Scotland branches and 55 Halifax branches
- And HSBC, which will close 440.
That was followed by the South East (361), the North West (353) and South West (327)