In 2017, Terry worked as a vocal coach and mentor on the primetime Saturday night BBC1 show, All Together Now and earlier that year on Let's Sing & Dance For Comic Relief, along with CeCe Sammy. In 2016/17 joined the auditioning panel on both The Voice and The Voice Kids. He appeared as a special guest judge alongside Dannii Minogue on the Judges’ Houses section of The X Factor in 2007, and on Your Face Sounds Familiar: Georgia, in 2014.
Also in 2007, Terry wrote and produced musical numbers and original songs for stars such as Elaine Paige, Meera Syal and Olivia Coleman for the BBC TV series, Beautiful People, alongside the show’s musical supervisor, Ian Masterson. Other vocal arranging TV credits include The Brits, Children In Need, Comic Relief, Eurovison, The Girls Aloud Party, and numerous other TV music specials.