The Serious Fraud Office is investigating claims that a supplier of communications equipment to the Saudi national guard, GPT Special Project Management, made payments totaling £14.4m to a Cayman Islands company, Simec International, between July 2007 and July 2010. The bribes were supposedly linked to a £2 billion 10 year arms deal.

A spokesperson from the parent company of GPT, said: “Certain allegations have been made, and these are being properly addressed with our full and constructive engagement.”