What to know

• The Prime Minister, 56, swapped Downing Street for his running trainers on Sunday as he took part in the world's biggest half marathon.S1
• UK Prime Minister Andy Burnham speaks about his reasons for competing in the Great North Run.S2
• Mr Burnham, wearing a Number 10 bib, was running in the half marathon to raise money for Changing Lives.S3
• Andy Burnham has previously completed the iconic half marathon as mayor of Greater ManchesterS4
• The Prime Minister, who is making a charity contribution from his own salary, has taken part in the world-famous run before - finishing with an impressive time of 1:55:24 - before heading to the pubS5