Unit 4 + 2
The group originated with guitarist Brian Parker and an instrumental band from Hertfordshire called the Hunters, who recorded for the Fontana label in 1961. Parker left the Hunters in early 1962 and joined Adam Faith's backing band the Roulettes. He didn't stay long with the latter band, preferring to put together a group of his own with the emphasis on vocals. Parker recruited guitarists Tommy Moeller (with whom he began writing songs) and David Meikle, and singer Brian Moules, and the quartet played gigs at youth clubs and other local venues, and turned professional soon after. Parker, who suffered from chronic ill health, left the band around this time (although he continued to write songs in collaboration with Moeller) and was replaced by Howard Lubin.
The quartet took the name Unit Four in 1963, and continued to find popularity in clubs. By this time, the British beat boom heralded by the Beatles was sweeping the charts, and the group recognized that they would need a punchier sound to have a chance at breaking out of the club venues and getting a recording contract. They added two more players, Rod Garwood (bass) and Hugh Halliday (drums), and, in the process, became Unit 4+2.