The pop group have been heavily linked with performing at the event on August 12, but no official announcement has yet been made.

The Mirror reported yesterday (July 29) that One Direction would definitely be playing at the event - with Ed Sheeran also performing.

However, a spokesperson for One Direction refused to comment on the report.

As previously reported, One Direction star Niall Horan has been getting into the London 2012 spirit recently, taking to Twitter to put himself forward for any tickets that aren't going to be used.

The event has brought huge excitement to London and the UK this summer, but there have been a number of empty seats at some of the venues.

Speaking on Twitter last night (July 29), Horan revealed that he would be more than game to take up some of the tickets that aren't going to be used - if they decided to give them away. He said:

"Whats with all the empty seats at the olympics..if they wan a give any tickets away ..i'll have them hahaha!"

It's not the first time Horan has commented on London 2012, with the Irish singer previously tweeting that he would be keen to try out swimming and the high jump.