By Sophie Woolley. When ex-banker Tabitha knocks 'green' activist Will off his bicycle with her 'Chelsea Tractor', two worlds literally collide. A tale of ecological responsibility, guilt and grimy hot tubs. Tabitha ...... Doon Mackichan Will ...... Joseph Kloska Samantha ...... Gemma Saunders Mary ...... Tessa Nicholson Reporter ...... John Biggins Directed by David Hunter.