I'll put my list out of its misery!
Madness - never seen the Nutty Boys live although they have played loads since reforming with the Madstock shows. Not sure if I want to go to a festival in Guildford to catch up with them now. As for the rest of the list
Lords of the New Church - they were great live and seen many times before Stiv Bators died following complications after being hit by a car
Big Audio Dynamite - they had one of Sigue Sigue Sputnik's drummers when I saw then and Mick Jones had to count him in!
PiL - only ever seen them at a festival. Never bothered with any of the Sex Pistols revivals but at least I've seen Mr Rotten live!