Sir Mick Jagger is claimed to have once purchased a multi-million pound country manor whilst high on LSD.

According to a 75,000-word unpublished memoir written by Mick in the 1980s, the Rolling Stones frontman spent a small fortune on historic Hampshire mansion Stargroves in England while he was experiencing an acid trip induced by the psychedelic drug, chemically known as Lysergic acid diethylamide.

Publisher John Blake has told The Spectator magazine that he was handed the manuscript three years ago and has been trying to get it verified by Jagger, 73, and within the tome it recalls the 'Gimme Shelter' rocker's drug-induced purchase of the property - which he and his bandmates used as a recording venue in the 1970s.

It also apparently documents a scary horse-riding incident on the grounds of the property which almost ended in Jagger being injured.

Blake said: ''Mick tells of buying a historic mansion, Stargroves, while high on acid and of trying out the life of horse-riding country squire.

''Having never ridden a horse before, he leapt onto a stallion, whereupon it reared and roared off like a Ferrari. He gave the stallion a thump on the forehead right between the eyes and slowed it down - otherwise the Stones' story might have ended differently.''

Included among the albums recorded by The Rolling Stones at Stargrove are 'It's Only Rock 'N' Roll (But I Like It)', 'Exile On Main Street' and 'Sticky Fingers'.

The country home was eventually sold to fellow British rock legend Sir Rod Stewart who added it to his portfolio of properties in 1998 for £2.5 million.

Blake wants to share the book with the public but Jagger nor his management will let him publish it.

Blake said: ''[Mick] has said again and again, in countless interviews, that he never will [write an autobiography]. Except what virtually nobody knows is that he already has. It is an extraordinary insight into one of the three most influential rock stars of all time - but the sad thing is, the public will probably never see it.''

The Rolling Stones' manager Joyce Smyth has confirmed the existence of the book, but is adamant it will not be allowed to be published.