The UK private banking market in 2026 gives you all of those options, but no single institution is the best choice for every wealthy client. Key Takeaways Barclays publicly states that UK private banking clients should be able to establish an investment portfolio of at least £3 million. Best for: Entrepreneurs, executives, landowners and wealthy UK families wanting an all-round private bank. The wider UK private banking network can connect clients with HSBC’s commercial banking, asset management and global markets teams. Which UK private bank is best for entrepreneurs?