gathering at that point. under pressure, borisjohnson has said he has launched an investigation. it is by the cabinet secretary, the top civil servant, to look into exactly what went wrong. although there are many people in westminster who say they know what went on and what went wrong, they have seen it. the video that was leaked to itv which shows senior staff laughing at a rehearsal, a mocked up rehearsal of a tv briefing, that of course, never did happen. it mentioned a cheese and wine party about how to answer questions about a gathering at number ten. the prime minister said he is furious and he is shocked by what he saw and the impression of what he saw and the impression of what might have gone on. that is not at the moment going to answer the questions that have been close to him right across the political spectrum. let s have a look at what damian grammaticas saw.