Capital contribution

The series following the largest and busiest police force in the country returns for five more episodes. Tonight, newly minted response driver Oz gets his first official taste of the action behind the wheel, when a teenager in his mum’s car at 4am refuses to stop for them. Elsewhere, officers are called out to put a stop the music at an impromptu party in Hyde Park – but their involvement does not go down at all well, and the event soon erupts into violence.