Hearts of Oak

In the week when Britain goes to the polls, Simon Schama reflects on the significance of one of the sights that will greet new MPs in the chamber of the House of Commons - the panelling made of solid oak. He traces the power and symbolism of the oak tree in British history from tales of Druids in ancient oakwoods to the songs of Nelson's sailors at Trafalgar and fears a new blight which could threaten its survival.

Producer: Sheila Cook.