Giles Havergal was Director of the Citizens' Theatre Glasgow, with Philip Prowse and Robert David MacDonald, from 1969 to 2003. He directed over 100 productions and worked as an actor with the company.
His adaptations include: Graham Greene's TRAVELS WITH MY AUNT which started in Glasgow and later won an Olivier Award in London; PG Wodehouse's SUMMER LIGHTNING for the Glasgow Citizens'; Charles Dickens' DAVID COPPERFIELD for Steppenwolf, Chicago; and Laclos' LES LIAISONS DANGEREUSES for American Conservatory Theater, San Francisco.
His one-man version of Thomas Mann's DEATH IN VENICE has been performed by himself in San Francisco several times. The adaptation started in Glasgow and later played off-Broadway.