Environmentalist measures financial value of Houses of Parliament treespublished at 10:30 British Summer Time 14 June 2016
A Devon environmentalist is measuring the financial value of trees in the grounds and gardens of the Houses of Parliament today.
Kenton Rogers, the co-founder of Exeter-based company Treeconomics, external, will use specialist computer software that he's pioneered in the UK.

In 2011, a pilot project in Torbay found trees were saving local taxpayers more than £1.3m in pollution absorption and flood prevention each year.