https://www.theguardian.com/uk/2012/jun/27/brecqhou-barclay-brothers-getaway-island
In 1993 Sir David and Sir Frederick Barclay bought the 32-hectare (80-acre) island for almost £3.5m. The Mayfair estate agent ad had described it as impressive, highlighting features such as a stone manor house, a private harbour and a helipad. Ownership also came with "tax free status".
Barclays Bank family.