Claire McCollum joins bishop James Jones in Lincoln to learn about the links between Christianity and forests. The 800-year-old Charter of the Forest is given a 21st-century relaunch and JB Gill meets a former addict whose Christian faith, combined with his new job as a tree surgeon, have together cured his addiction. In Essex, a group prepares for Lent with 'Forest Church', plus hymns and songs celebrating creation, including Great Are You Lord and Indescribable.

The Rev Kate Bottley finds out how St John Ambulance began as an ancient Christian order in Jerusalem back in the 11th century and brushes up her first-aid skills. Meanwhile JB Gill meets the first person in the UK to donate an organ to a complete stranger.