In 1963, Grant was hired by promoter Don Arden along with John Schatt to be the British tour manager for artists such as Bo Diddley, the Everly Brothers, Little Richard, Brian Hyland, Chuck Berry, Gene Vincent and the Animals. By 1964, Grant had started to manage his own acts including the Nashville Teens, an all-girl group called She Trinity, the New Vaudeville Band, The Jeff Beck Group, Terry Reid and Stone the Crows. His management was established in the same 155 Oxford Street office used by his friend, record producer Mickie Most, who had previously worked with Grant at the 2i's Coffee Bar. Most and Grant together set up RAK Music Management, an offshoot of Most's Rak Records.