In part one, Al Jazeera Investigations reveals how pro-Israel groups are trying to influence Britain’s youth.
In part two, our undercover reporter joins a delegation from the Israeli embassy at last year’s Labour Party Conference.
In part three, our undercover reporter witnesses a heated conversation between two opposing activists. The evidence raises serious questions about whether accusations of anti-Semitism are used to stifle political debate.
In part four, the senior political officer at the Israeli embassy in London discusses a potential plot to 'take down' British politicians – including a minister.