erm everyone thinks the man at the ministry sticking his piggy nose into other tax payers business is new
It isnt - the first duty to report is in the Banking act 1926 - deposits earning interest over £5 a year I think
the new ones include the money laundering regs and they are here
there is a bit about transfers below £15k
https://www.gov.uk/guidance/money-laundering-regulations-risk-assessments
altho I have transferred sums up to £150k ( house in London of course)
I have never had a clerk ask " where dat come from den ? "