Mars is ploughing £1m into a TV campaign to promote its new Galaxy Mistletoe Kisses this Christmas.

The commercial, which breaks this week, tells the story of a gnome who's in charge of creating Galaxy Mistletoe Kisses. Actor Michael Gambon provides the voiceover for the ad, which airs from this month.

Mars introduced the seasonal line in August to help reverse the fortunes of the struggling "self-eat" category, which it said was in double-digit decline.