SECURITY firm G4S appeared to have bounced back from its embarrassing Olympic debacle after announcing solid growth today.

The company failed to provide all of its contracted 10,400 guards, forcing the Government to draft in military personnel to look after security at the Games.

However, the company said excluding the London 2012 contract, revenues rose 6.3 per cent in the nine months to September 30, up from 5.8 per cent growth in the first half of the year.

Looking ahead, the group said it expects growth to improve further as new contract wins in the UK come into effect, including a deal in Scotland to manage the electronic tagging of offenders.

The group has also strengthened its portfolio with major contracts in Brazil and a deal to provide security checks at Oslo airport in Norway.

But the big test for the firm will come in the weeks ahead when the British government is expected to award a string of contracts to run prisons.

G4S, which reaffirmed its estimated loss on the Olympics contract at £50 million, is the world's biggest private security company with more than 650,000 staff worldwide.

Two G4S directors resigned in the wake of a review into the company's botched Olympic Games contract but the board decided chief executive Nick Buckles should remain.

G4S will have a clearer view of the government's long-term appetite to work with the firm as six contracts to run nine British prisons are expected to be awarded this week.

Shares were up by more than two per cent after today's update.