years_active successor birth_place nationality salary title name birth_date term spouse article_title birth_name occupation alma_mater
1972 -lrb- chairman -rrb- - 2013 -lrb- ceo -rrb- 2013 - present ian mcaulay northern ireland british # 588,000 chief group plc executive of viridor and joint ceo of pennon colin drummond 22 february 1951 1992 -- present georgina drummond colin drummond
 colin irwin john hamilton drummond businessman university of oxford and harvard business school
colin drummond

colin irwin john hamilton drummond obe -lrb- born 22 february 1951 -rrb- is a british businessman .
he is the chief executive of viridor and joint ceo of pennon group plc , a british water utility and waste management company .
