RBS speeds up investment arm split The move comes ahead of RBS's settlement with regulators on both sides of the Atlantic over its part in the Libor rate-rigging scandal. A settlement - including a fine of around £500m - had been expected this week. But insiders say a final deal has been pushed back because of delays in the US investigation, possibly by up to two weeks. Mr Hourican, head of the investment bank, is expected to leave but it is understood he has fought for his colleague Peter Nielsen, who heads the markets business, to stay on and report directly to chief executive Stephen Hester. Suneel Kamlani, Mr Hourican's deputy, will work alongside Mr Nielsen. Peter Rading, who worked underneath Mr Nielsen and oversaw the rates business, has resigned from the bank for "personal reasons." While international banking will continue to be run by John Owen, who will now also report directly to Mr Hester.