TSB Bank has issued a word of warning to its customers in a fresh £452 alert online. It comes as TSB ’s analysis of its data indicated that purchase scams accounted for 63% of bank transfer fraud cases reported between January and September 2025 by its customers – up from 52% across the same period last year. The bank also recorded an 11% annual increase in the volume of purchase fraud cases between January and September 2025. It said that victims lost an average of £452 per scam this year.