As I recall, one time they were supporting The Who (Wembley Stadium), one time Phil Lynotts band (Yellow Pearl ?) sssh - at Sehlhust Pk, and the other time, I forget but was at the Brighton centre supporting somebody.
It might not be musically innovative or challenging, but the gigs are (or at least used to be) a good laugh and fantastic atmosphere. Think I saw them 3 times.