Linklaters is advising G4S over a potential Serious Fraud Office (SFO) investigation into claims that the company has been overcharging for electronically tagging criminals in England and Wales.

Justice secretary Chris Grayling told the House of Commons yesterday (11 July) he wanted the SFO to investigate the private security firm, which he says has been “[charging] in ways not justified by the contracts and for people who were not in fact being monitored”.