Lord Heseltine gets into a war of words with the Lib Dem spokesman on children, schools and families, David Laws, over the proposed "mansion tax", claiming an "ordinary terrace" - not a mansion - costs £1m in London.

Earlier this week Lib Dem Treasury spokesman Vince Cable set out plans to tax owners of £1m-plus homes to raise £1bn to help low-paid workers.

Watch the full debate at the Question Time website