The Hollies were formed in 1962 when duo Allan Clarke (vocals) and Graham Nash (vocals/guitar) joined Eric Haydock (bass), Don Rathbone (drums) and Tony Hicks (guitar). They signed to Parlophone and their first two singles were covers of the Coasters' "(Ain't That) Just Like Me" and "Searchin'," which reached UK #25 and #12 respectively. Rathbone left to become their road manager and was replaced by Bobby Elliott. The Hollies' third single, 1963's "Stay," began a remarkable streak of mostly all UK Top 10 hits which ran until 1970, including the #1 hit "I'm Alive," written by Graham Gouldman. Eric Haydock was fired in 1966 and replaced by Bernie Calvert. Also that year, The Hollies had their first US hit with "Bus Stop," also written by Graham Gouldman, which reached US #5. They had two more US Top Tens with "Stop Stop Stop" and "Carrie Ann."
In 1968 Nash left to form Crosby, Stills And Nash. He was replaced by Terry Sylvester of the Escorts. The Hollies continued to have huge hits in the UK, and "He Ain't Heavy, He's My Brother" was an international smash and a Top Ten hit in the US. Clarke left for a solo career. After Clarke's departure, "Long Cool Woman (In A Black Dress)," which he sung on, became a #2 US hit. He was replaced with Mikael Rickfors, but Clarke returned in late 1973. They had one more hit, the worldwide smash, "The Air That I Breathe."
Hollies compilations would chart high in the UK for years to come. In 1981, Sylvester and Calvert left the band, and Alan Coates joined on guitar. Clarke, Nash, Hicks and Elliott reunited for 1983's What Goes Around album, which included a US Top 30 cover version of the Supremes' "Stop! In The Name Of Love." They continued to tour without Nash, and with various new members augmenting longtime members Clarke, Elliott, Coates and Hicks. In 2000 Clarke retired and was replaced by Carl Wayne on lead vocals.
source: http://www.prex.com/biography/The-Hollies-discography.htm