Consumer group says 6,161 branches have been shut since 2015 and there are 30 constituencies without one

Yorkshire has the lowest ratio of bank branches to people of anywhere in the UK after a wave of closures that has left many places without a single outlet, research has found.

The Yorkshire and the Humber region now has 248 branches left to serve a population of 5.6 million people, according to consumer group Which? That equates to 4.4 branches for each 100,000 people, “leaving every Yorkshire resident sharing their branch with 22,557 others”.