ALL boxers want to be known for their knockout blows.

Now 27-year-old Bolton boxer Amir Khan has been filmed "punching out" a row of eight candles as he was unveiled as the new ambassador for a UK fight brand.

The footage of the champion, one of the fastest punchers in the sport, was captured behind-the-scenes at a photoshoot in Manchester, where he was revealed as a face of RDX.

Filmed at the city's Victoria Baths, the video purports to show him extinguishing the lit candles lined up in a row with one punch.