UK Statistical data reference
Pay.UK publishes a range of statistics including; monthly, quarterly, annual and historical processing statistics for Bacs, Chaps, Cheque and Credit Clearing Company and Faster Payments.
Current Account Switch Service Statistics
Updated monthly, this PDF provides statistics on switches per month including the percentage of personal switches vs small businesses and charities.
Produced quarterly, these dashboards include information on customer awareness, customer confidence, service performance and switching levels. The next publication date is week commencing 27 January 2020.
You can find previous dashboards here.