Epsom Downs Racecourse has issued a statement promising "full investigation" into why part of the Duchess’s Stand roof blew off on Monday.

It confirmed that it is a different part of the roof to that which blew off in January 2012, and that no one was injured.

Unlike 2012, there has so far been no disruption to local traffic and a team is out collecting insulating material which has been blown across a wide area.

The Duchess Stand, which was opened in April 2009, was built as part of a £38 million development at the racecourse.

Racecourse spokesman Johnno Spence said: "Following severe weather conditions and turbulent winds at Epsom Downs racecourse this morning, as witnessed on TV around the country, a section of the Duchess’s Stand roof was damaged.

"There have been no injuries and there has been no disruption to local traffic. All Christmas party events at the course have finished and all New Year’s Eve parties will take place in the Queen’s Stand.

"We have a team recovering the soft insulation material carried by the wind from the area surrounding the racecourse and apologise to any residents for any inconvenience in that regard. Our next race meeting takes place on Wednesday, 23 April, 2014."

"There will be a full investigation into this incident to establish precisely why this incident has occurred and how it can be avoided in future."

After the 2012 incident the managing director of the racecourse, Rupert Trevelyan demanded a ‘guarantee’ from contractors that it would never happen again.

He said: "We are replacing the roof in a robust way that will be guaranteed by engineers who will do the calculations and make sure everything is correct. What the report shows is there was a freak gust of wind that caused it."

Epsom Councillor Neil Dallen, who went up to inspect the damage this morning, said: "I’m a bit disappointed. It’s a bit frustrating to have the roof blown off when it was first built and a bit more damage now. It’s extreme weather. The wind comes across the Downs and there’s no brake."

Epsom Council’s planning inspectors, compiled their own report into the 2012 incident and advised the racecourse on what it should do in terms of repairs.

According to website Epsom Weather, the strongest gust recorded at its West Ewell weather station on Monday was 47.9 miles an hour- just beyond the wind speed the roof, whose aluminium skin is no thicker than a credit card, was originally built to withstand.

Contractors Wilmott Dixon, who oversaw the construction of Duchess Stand and the repairs, said the material covering the roof is commonly used on large buildings around the country.

A spokesman said it was designed to withstand winds of 47mph and was designed to comply with regulations taking into consideration location, exposure, height of building, shape and size.