Activist investor Sherborne has become the fourth-largest shareholder in Barclays, raising the prospect of pressure being put on the bank's board.

Sherborne, run by Edward Bramson, has picked up a 5.16% stake in the lender for £580 million and now sits behind Capital Group, Qatar Investment Authority and BlackRock on shareholder register.

Mr Bramson's company bills itself as a "turnaround investment firm" and has a stated goal of doubling the share price of companies it invests in.

It is understood that Mr Bramson, who has a track record of corporate activism, has met Barclays representatives, although he is yet to lay down any specific demands.