RSTM already provides forensic medical services, custody support and secure transport services to clients that include the UK Border Agency, the Ministry of Justice, NHS trusts and police forces.

Capita's joint chief operating officer, Andy Parker, said: 'The acquisition of RSTM will provide further scale and depth to the range of solutions we offer the health and emergency services, criminal justice system and wider public and private sector clients.

He added: "We already work in some capacity with all police forces in England and Scotland, extensively with NHS trusts and, through our health and wellbeing business, with a number of large public and private sector organisations."

"These additional capabilities will allow us to provide new solutions, on a tailored basis, alongside our multi service offering."RSTM has approximately 2,000 employees, primarily based in Bristol, Heston and at client sites.

Although its current level of revenues, on an annualised basis, is £75 million, it made an opeating loss for the 11 months to 31st March 2012 of £5.7 million.