Clark , was an apprentice railway engineer who became a technology teacher .
Clark , was later appointed principal of Middlesbrough Technical College , now the University of Teesside , then principal of Nottingham Technical College , now Trent University .
Clark , was an apprentice railway engineer who became a technology teacher , and was later appointed principal of Middlesbrough Technical College , now the University of Teesside , then principal of Nottingham Technical College , now Trent University .