Documentary series. David Cameron's closest advisers reveal how he tried to tackle the Europe question, and his battles at home and in Brussels before the referendum.

For the first time on television, David Cameron’s top advisers - including George Osborne and William Hague - reveal the discussions that led to the decision for which Cameron will go down in history: to hold an in/out referendum.

The programme lifts the lid on the prime minister’s desperate attempts to get a new deal for Britain in Europe. Top leaders, including presidents Tusk, Juncker, Sarkozy and Hollande, reveal the details of their negotiations with Cameron.

From beers in Prague to dinners at Chequers, the prime minister tries to convince his partners to give him something to show Britain can claw back power from Brussels – especially on immigration – but he keeps getting knocked back.