Allan Caswell was born in Edinburgh and now lives in Rock, near Wadebridge. He studied Illustration at Falmouth School of Art, before moving to London where he obtained a BA (Hons) in Illustration at Kingston University. He worked as a freelance illustrator for two years before travelling in south east Asia and Australia. Subsequently he spent four years in St Ives working and exhibiting and undertaking a solo show at the Plumbline Gallery. He was also a visiting lecturer at Falmouth School of Art. After a year in Padstow he travelled to Spain, Morocco, India and the USA.

Since 2003 Caswell has had his own gallery in Rock.