As reported by Ad Nut's UK colleagues:
Three is promising to address people's gripes about mobile networks as part of a new campaign, which is launching with a Muppet musical spectacular. The campaign, called '#MakeItRight', launched on 5 June with a 90-second TV spot featuring a purple puppet who belts out East 17’s It’s Alright.
If you need to see more of the character, named 'Jackson', after that (Ad Nut did not), you can go to the brand's 'Make it right' site to see the Muppet's press conference and specifics on what the brand intends to fix about the mobile industry.