Warwick Arts CentreTed and Ralph, the 'Suit you!' tailors and the rest of the gang's most fondly remembered characters reconvene for a 30th-anniversary greatest hits sketch show, interspersed with the cast reminiscing about their creation A collective "oof" emanates from the audience when Charlie Higson reminds us it is 30 years since The Fast Show began. But many of its characters and catchphrases have weathered th…