Around 90,000 UK properties are owned by anonymous companies, worth over £100 billion.

Barclays has agreed to make a voluntary payment of £6.3 million to WealthTek’s clients.

The siblings face up to 14 years’ imprisonment.

The regulator says firms need to improve to better protect against money laundering.

The regulator identified serious concerns with the anti-money laundering and sanctions framework in place at Starling.