Peter Liddle was born near Darlington and began painting in Cornwall while still living in London. He spent the years from 1965 to 1970 living in Cornwall and returns regularly to the county to paint and sculpt. While in Cornwall Peter established a lifelong friendship with eccentric adult educationalist Frank Turk, who contributed greatly to the burgeoning spirituality in Peter's work.

Liddle has shown his work at the Royal Academy summer exhibition, and has been a regular exhibitor with the NSA and Penwith Society of Arts. He has also exhibited with the Ruralists.

Peter attended the Nottingham College of Art in the late 1950s, studying drawing, art history and silversmithing. His dramatic landscapes are often woven with allegory and based on a lifetime's exploration of Britain's coasts and high places.