According to consumer champion Which?, more than 6,000 bank branches have closed since 2015 due to changing technology and consumer behaviour. NatWest, Royal Bank of Scotland and Ulster Bank. NatWest has shut down the most branches of any banking group at 1,428 closures over the last 10 years. Lloyds Banking Group, which comprises Lloyds Bank, Halifax and Bank of Scotland, has closed 1,243 sites. Notably, Barclays has cut its branch portfolio the most out of any other individual banks with 1,228 disappearing from the high street.