OH no, not another Brexit lecture!

As soon as the 'B' word was uttered on stage on Sunday night, a few in the sell-out crowd at The Forum were shifting uncomfortably in their seats.

Every stand-up has got an opinion – after all, a lot of what's happened in the past 12 months has been comedy gold – but after seeing two or three 'shows' on the subject, you start pining for the days where comedians told jokes.

Henning Wehn at least could shed new light on the debate; being a German (sort of) immigrant, there was no danger of this descending into a sanctimonious "why the British public are idiots" that we're going to hear a lot more of from this year's Edinburgh Festival crop.

The first 'half', which seemed to come to an end just as the audience were getting settled, was a warm-up for the main show, and saw the German Comedy Ambassador to Great Britain revive material from his previous tours. An unusual move, as anyone who'd watched the DVD on sale in the foyer would've known half of the routines already.

As you would expect from a comedian whose first language isn't English, his whole gimmick is his own struggle to adapt to life in the UK, and being baffled by what us Brits get up to.

A routine that usually relies on him having a conversation in German with an audience member hit a brick wall, with not a single German-speaker in the audience – though that was probably to his advantage when it came to wrapping up the first half by hoodwinking the whole crowd into clapping along with a Hitler Youth song.

The main show, Westphalia Is Not An Option , made up the whole second half, and felt a lot fresher, as you'd expect. It was loosely based around Brexit, and how he now faces a citizenship test "just to be on the safe side" – but it was done so from a perspective not heard before on stage. An outsider's observations.

The strongest routine revolved around the British tendency to use self-deprecation as a get-out-of-jail-free card – the ridiculous notion that we seem to favour "having a laugh" over actually being competent.

He says that he doesn't consider himself an immigrant: "How can you be an immigrant if the country you are going to is worse?" – few can argue.

Immigration and assimilation were at the centre of every routine, joking that "immigrants are good for the country, but nobody wants to see one outside their kitchen window... essentially they are like windfarms".

Some of it fell a little flat, occasionally being mixed up in his indistinguishable overexcitement, and a routine about his visit to a mosque – supposed to be his big finalé – was lost on an audience who live more than an hour away from the nearest one.

There were a few home truths, though nothing more than an orderly and organised German poking fun at a Britain in disarray. But overall, it was a refreshing change from the doom-mongers lamenting the nation's demise.

Review by KARL STEEL