Jeremy Stafford has stepped down as the head of the domestic business of outsourcing group Serco as the company tries to repair its relationship with the UK government.

Serco, which is a FTSE 100 giant, said that Jeremy Stafford was leaving to pursue other opportunities outside the company. Serco has been facing a scandal in which it is accused of failures that include charging taxpayers for electronic tags used on dead criminals. The scandal has already claimed the job of company's chief executive, Christopher Hyman.

Chris Hyman, the chief executive officer of outsourcing giant, Serco had announced his decision to step down from the company as the company looks to rebuild its relationship with the UK government, which is one of its major clients. Mr Hyman steps down as the company faces two Government investigations into multi-million-pound contracts. He will now be temporarily replaced by Ed Casey, who has run Serco's Americas division since 2005.

The company which runs, the Docklands Light Railway, the Boris Bikes scheme and the Atomic Weapons Establishment, has been accused of overcharging taxpayers to monitor the electronic tags of offenders who were dead, non-existent or in custody. The company is also facing charges of separate police fraud investigation over alleged misreporting in a £285 million prison escorting contract.