Saville was a prolific children's author who wrote many adventure stories set in his native Sussex and in Shropshire where he was a frequent visitor, staying at a house called Prior's Holt on the slopes of the Long Mynd. This was the setting for his first novel, Mystery at Witchend published in 1943.

He is particularly known for his series of twenty Lone Pine adventures written between 1943 and 1978. Eleven of these were set in South Shropshire, mostly on the Long Mynd where over the years he discovered many secret locations, but be gradually extended his range to encompass the Stiperstones and other parts of Shropshire.

The Malcolm Saville Society was established to promote an appreciation of the author's work. Their website at www.witchend.com provides information about all his adventure stories.