By Lucretia Munro BAFTA Awards host David Tennant has shot down a bizarre theory that signature sideburns that has gained traction online. The 52 year old father of five said there was no “truth” to the theory as his facial hair and confidence issues. Following in the footsteps of fellow former hosts of the awards including Stephen Fry, Richard E. Grant and This Morning’s Alison Hammond, David took part in a Q&A ahead of the ceremony. During the conversatin he was asked, “What’s your sideburn policy? They appear to be sized in direct proportion to your characters’ confidence.” David responded:…