Guinness give the title of first British Rock 'n' Rollers to top the British charts to Tommy Steel & the Steelmen's version of "Singing the Blues" which reached the top on 11th January 1957.
Cliff & The Drifters(as were) got there for the first time on 31st July 1959 with "Livin' Doll"
Though The Tornadoes did score the first major Transatlantic Britrock hit with "Telstar" Billy Fury never had a No 1 hit in his own right.(personal best "Jealousy" No 2 Sept. 1961)