The near-£2billion UK firm said it would generate $40million (£21.7million) revenues from the event, where it installed hundreds of miles of cable at 37 venues to support broadcasters.

Aggreko has also won a contract to provide 9MW of power — enough to power 9,000 homes — for the construction of the London 2012 Olympic Village.

Strong demand from emerging markets such as the Middle East and South America helped drive half-year profits nearly 43 per cent higher, to £67.9million, on revenues up 28 per cent to £407.7million.

Chief executive Rupert Soames said: “The momentum will more than offset softer demand in North America and Europe and will enable us to deliver another strong performance in the second half.”

The  shares fell 19p to 692.50p.