Bronwen Maddox meets the environmentalist Tom Burke, who plans to pass on the majority of his legacy to his passion: supporting bird life. Tom was brought up on a council estate in Plymouth, and didn't inherit any money from his parents. He says hard work, luck and the property price boom have given him a substantial amount to pass on. But he believes leaving too much money to younger family members is the wrong thing to do - and he doesn't want it to go to the state.