11/12/2011

Matt and Ellie head to Great Britain's largest lake, Loch Lomond in Scotland. Matt explores the islands of the Loch and helps one resident exercise his horses by swimming with them.

Ellie explores the Loch's darker side by investigating the anti-social behaviour which goes on once the summer tourists have left. She goes on patrol with the police, looking for evidence of poaching and vandalism.

John Craven investigates our insatiable appetite for water - and asks whether, in the future, there will be enough to go around. On Adam's farm the latest results are due from his TB testing, and it is time for the cattle to come in for the winter. And James Wong is in Snowdonia looking for evidence of plants and animals left behind by the ice age.