His numerous contacts with those in authority in the publishing industry in the United Kingdom assisted EMI in securing the rights for British recordings of cast albums of many American shows opening in London. Cast recordings of popular West End shows were popular in the 1950s and 1960s, and were huge sellers for EMI.
Newell also wrote the lyrics for the West End musical "Mister Venus" (music by Trevor H. Stanford, akaRuss Conway), but the show was not a success.
Newell continued working as a producer into the 1980s, most notably on Shirley Bassey's 1984 hitalbum with the London Symphony Orchestra, I Am What I Am.
During his career, Newell's honours included one Grammy, an Emmy and three Ivor Novello Awards for his contribution to the entertainment industry, plus six British Music Industry Awards. In 1966, the song "Forget Domani" from the film The Yellow Rolls-Royce, with lyrics by Newell to music by Riz Ortolani won a Golden Globe Award for Best Original Song. In 1999, Newell's song, "Portrait of My Love" was honoured at the BMI Awards in London for having crossed the threshold of two million radio plays.
Newell retired in 2001 to his home in West Sussex, but after a series of debilitating strokes was later moved to a local nursing home. He was awarded an OBE in 2004, just before his death.