Former Welsh rugby captain Sam Warburton has revealed that he suspected the England national team of trying a series of underhand tactics, to unnerve his side, ahead of their 2015 World Cup game.

Speaking last night, in BBC Wales documentary ‘Full contact’, the openside flanker explained that the home side may have gone to extraordinary lengths to try and gain an advantage.

"We were in the changing room and it was unusually hot,” said Warburton, per Wales Online.

"We said could someone turn down the heat for goodness sake because somebody is having a laugh here turning it up.

"Then the lights went out and it was pitch black in there momentarily. They were coming on again and going off.

"We were all thinking ‘they are trying to get under our skin here' and it, kind of added fuel to the fire."

With 18 months of build up since the World Cup draw was made, this pool A match was one of the most important and eagerly anticipated clashes between the two sides in history.

However, England’s suspected pre-game tactics were unable to earn them the victory as they lost 25-28 at Twickenham.

Fly-half Dan Biggar was the star of the show scoring 23 points, a record for a Welshman in a World Cup match. 

The win was enthusiastically celebrated by the Welsh team, especially in light of the dressing room antics. 

"The players were banging their changing room slots and stamping the floor," Warburton added.

"They wanted everyone outside the changing room to hear it as well to show how much that game meant to us."

The victory ultimately knocked the England team out of their own World Cup, as they finished below Wales and Australia in the group.

Unfortunately, Warburton and his Welsh side were unable to progress much further in the competition losing to South Africa 23-19 in the quarter-finals.