Watch the episodes on BBC iPlayer:
Leaders presented by Sir Trevor McDonald
Explorers presented by Dermot O’Leary
Scientists presented by Chris Packham
Entertainers presented by Kathleen Turner
Activists presented by Sanjeev Bhaskar
Sports Stars presented by Clare Balding
The final episode ‘Artists & Writers’ airs on BBCTWO next Tuesday (29th Jan) at 9pm. A live final follows on Feb 5th from the London o2.