Harry Cowell shows us around one of South West London's hidden gems - a world class recording studio in Kingston-upon-Thames. He talks to Joe Forrester about Cliff Richard, Cher, Tina Turner, Celine Dion, Demi Holborn, Katherine Jenkins, Steps, Asia, Def Leppard, Heather Small, Cameron Whiley, Reconnected, Dirty Sneakers, Sweety Irie, Gianluca Paganelli and more. www.missionlimited.com @MissionLimited