"I love teaching and I love geography, so I chose to stay in the classroom," he said. "But now I'm being penalised. I'm jumping up and down seething."
Mr Williams had planned to retire at 65. But as his final-salary pension pays out on the highest amount he earns in the finalthree years at work, he will leave in 2010, two years after the pay cut takes effect.
Mr Williams has written to his head to register his anger. And he has said that he is no longer willing to take pupils on residential field-trips. "If you're taking a 5 per cent hit on your salary, you're going to take a 5 per cent hit on what you do," he said. "Frankly, something has to give, and it's going to be goodwill."