He got it as a long time supporter of the Labour Party and a senior union official at Equity. The official citation in the honours list is for public and political service, nothing to do with his acting ability or otherwise.
Wikipedia entry for Tony Robinson said:
Robinson and his former wife Mary Shepherd were active in Bristol Labour politics from the early 1980s.
From 1996 to 2000, he was vice-president of the actors' union Equity, helping with a huge restructuring programme which turned a £500,000 deficit into a small surplus. He continues to work within Equity. In 2000 he was elected to the Labour Party's National Executive Committee, a position he held to 2004.
He was also active in the "Make Poverty History" campaign during early 2005, in the lead-up to the G8 summit in Scotland, and is the patron for UK-based charity Street Child Africa.
In March 2011, Robinson participated in the 'March for the Alternative' protests in Central London, which opposed the Conservative led Coalition UK Government's spending cuts programme
From 1996 to 2000, he was vice-president of the actors' union Equity, helping with a huge restructuring programme which turned a £500,000 deficit into a small surplus. He continues to work within Equity. In 2000 he was elected to the Labour Party's National Executive Committee, a position he held to 2004.
He was also active in the "Make Poverty History" campaign during early 2005, in the lead-up to the G8 summit in Scotland, and is the patron for UK-based charity Street Child Africa.
In March 2011, Robinson participated in the 'March for the Alternative' protests in Central London, which opposed the Conservative led Coalition UK Government's spending cuts programme