In 1986, McGrath, with Jimmy Mulville and Denise O'Donoghue, co-founded the independent British TV production company Hat Trick Productions. An early production was Chelmsford 123 (1988 and 1990), which McGrath and Mulville wrote and performed. In 1990, he hosted the game show Trivial Pursuit on BBC One, but in 1992 he was dismissed from Hat Trick. The confrontation came days after McGrath had left his wife and two young children. He was a panel member on the BBC comedy sports quiz They Think It's All Over (1995–2006). He was presenter of the series Rory's Commercial Breakdown (1997), where humorous adverts were shown from different countries. He has made two football DVDs, Own Goals and Gaffs – The Premiership in 2002 and More Own Goals and Gaffs in 2003. McGrath also appeared in an episode of the Sooty Show (Time Capsule), as a scuba diver who appeared from anywhere to stop Matthew Corbett and Sooty from burying their time capsule.
In 1986 McGrath, with Jimmy Mulville and Denise O'Donoghue, co-founded the independent British TV production company Hat Trick Productions. An early production was Chelmsford 123 (1988 and 1990), which McGrath and Mulville wrote and performed. In 1990, he hosted the game show Trivial Pursuit on BBC One but in 1992 he was dismissed from Hat Trick. The confrontation came days after McGrath had left his wife and two young children. He was a panel member on the BBC comedy sports quiz They Think It's All Over (1995–2006). He was presenter of the series Rory's Commercial Breakdown (1997), where humorous adverts were shown from different countries. He has made two football DVDs, Own Goals and Gaffs – The Premiership in 2002 and More Own Goals and Gaffs in 2003. McGrath also appeared in an episode of the Soot,y Show (Time Capsule), as a scuba diver who appeared ,from anywhere to stop Matthew Corbett and Sooty from burying their time capsule.