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- Dave Greenslade - keyboards (born 18 January 1943, Woking, Surrey)
- Tony Reeves - bass guitar and double bass (born Anthony Reeves, 18 April 1943, New Eltham, South East London)
- Dave Lawson - keyboards and vocals (born David Lawson, 25 April 1945, Hampshire)
- Andrew McCulloch - drums and percussion (born 19 November 1945, Bournemouth, Dorset)
Longtime musical associates, with a common background in jazz, Greenslade and Reeves had been original members of Colosseum. The two decided they wanted to form a band with two keyboardists. At the time, Reeves was A&R director for the independent progressive label Greenwich Gramophone Co., and he invited Dave Lawson of Samurai, a commercially struggling act with the label, to become part of the group. Lawson was previously a member of The Alan Bown Set and Web, whilst McCulloch was briefly a member of King Crimson and Fields.
Dave Clempson (ex Humble Pie) guested on Greenslade's third album, playing guitar on two tracks. Reeves left around that time and was replaced on the U.S. tour and subsequent fourth album, Time And Tide, by Martin Briley who also contributed guitar and backing vocals.
Greenslade announced their disbandment in early 1976 due to management problems. Dave Greenslade went on to record his debut solo album, Cactus Choir, and in late 1976 and early 1977 put together a new band line-up with ex-Manfred Mann's Earth Band frontman Mick Rogers. Initially the rhythm section consisted of Dave Markee and Simon Phillips, who had played on the album, but they were replaced by Tony Reeves (who had in the meantime joined Curved Air) and Jon Hiseman (then concurrently leading his own Colosseum II) for the 1977 dates.
In 2000, Greenslade and Reeves, after considering a full-blown reunion of the original line-up, teamed up with vocalist/keyboardist John Young, and recorded a new Greenslade studio album: Large Afternoon. Drummer John Trotter joined in time for a subsequent tour, during which the live album Greenslade 2001 - Live: The Full Edition was recorded. The album was released in 2002. John Trotter left the group the following year to move to Australia, and was to be replaced by James Gambold, but nothing further happend.
After Greenslade's original breakup, Dave Lawson went on to be a much-in-demand session musician, as well as playing with Roy Harper and later Stackridge. Thereafter he composed for film and television, including sound tracks for advertisements for British Gas and others. Martin Briley had a moderately successful solo career before finding work as a songwriter for popular artists such as Céline Dion and *NSYNC. Andrew McCulloch instead left the music industry, obtained a 'Masters Certificate' and pursued a career in sailing.
- 1973: Greenslade, Warner Bros. K 46207
- 1973: Bedside Manners Are Extra, Warner Bros.
- 1973: Reading Festival 1973 (one track), GML Records 1008
- 1974: Spyglass Guest - UK No. 34 Warner Bros.
- 1975: Time and Tide, Warner Bros. K 56126
- 1997: Shades of Green (1972-75)
- 2000: Live (recorded in 1973-75)
- 2000: Large Afternoon
- 2002: Greenslade 2001 - Live The Full Edition
- 2013: Live In Stockholm - March 10th, 1975