"At the BBC Proms he shared the platform with Pierre Boulez for the Proms premiere of Karlheinz Stockhausen's "Gruppen" in 1967, and conducted the Proms premieres of "Die Jakobsleiter" in 1968, "Boris Godunov" in 1971 and "The Fiery Angel" in 1991, as well as public premieres of George Lloyd's Symphony No.6 and works by Roger Smalley, Elizabeth Maconchy and Jonathan Elias.