Coutts bank is at the centre of a sexual harassment scandal after it emerged that an “untouchable” banker was allowed to keep his job despite a slew of allegations.

Coutts, which is the Queen's bank, conducted an internal investigation after female staff complained about the behaviour of star banker Harry Keogh, 57, said to be so intolerable that some women refused to work with him.

Many reported allegations of inappropriate behavior by Mr Keogh and other bankers, including lewd comments, heavy drinking and unwanted physical contact, according to written accounts seen by the Wall Street Journal.

One woman said Mr Keogh brought in one-third of the bank’s business and was therefore untouchable.

The graduate trainee who was in her 20s at the time, claimed that in 2015, Mr Keogh had touched her groin in front of colleagues at a meeting, ostensibly to indicate the location of an injury he had. When she later asked him whether the injury was better, he asked her to touch his groin.

During a dinner, he swore and boasted of his sexual exploits, she said, and as he left, he whispered that “he’d take her with him if he could.”