Harry North started out as a bodger on Valiant before going freelance, getting work for Look-In. His first strip for them was a fill-in in 1971.  Among the features he created for this paper were 'On the Buses' (1972), 'Doctor in Charge' (1974), 'Doctor at Sea' (1974), 'Doctor on the Go' (1975-76), 'It's Madness' (1981-83), 'Super Gran' (1985), 'No. 73' (1986-87), 'Gilbert the Alien' (1987) and 'ALF' (1988). 

​

From 1976 he drew for Mad magazine (both the US and UK editions), for which he continued to draw into the 2000s. He also worked for Heavy Metal and the French magazines Pilote and Zona, and illustrated books.

 

By 2004 he had moved to New York and is represented by the agency Way Art.