Wehn studied Business Administration in Münster and worked in customer relations. In 2002, he moved to the United Kingdom to work in the marketing department of Wycombe Wanderers. One evening, he saw an open mic night and decided to try comedy. Of his decision to stay in the UK, Wehn later wrote: As a result, since October 2003, Wehn has been the self-styled "German Comedy Ambassador in London". After beginning his career as "warm-up act" to various comedians in London, he now has his own act on the British comedy circuit. Wehn has appeared on the panel shows8 Out of 10 Cats, Have I Got News For You, Room 101, 8 Out of 10Cats Does Countdown, QI and Would I Lie to You?. He also appeared on Channel 4's political discussion/comedy show 10 O'Clock Live in May 2013. He is a recurring panellist on both the BBC Radio Five Live comedy sports show Fighting Talk and on the BBC Radio Fourpanel gameThe Unbelievable Truth. Wehn also appeared as a panellist on the 2015, 2016 and 2017 series of for both the BBC and Channel 4. He appeared in Would I Lie To You?, Episode 8 of Series 9, in which he revealed that he and his friend were once arrested by border guards for illegally entering the Czech Republic in the mid-1990s. He has also revealed on a subsequent taping that for three weeks in the mid-1990s he was listed as a missing person by Interpol. In 2014, Wehn and fellow comedian Mark Watson fronted a travelogue in Brazil called The Road to Rio for TV channel Dave. In the show, they explored the country's sporting culture, tying in with the 2014 World Cup held in the country. Henning has often toured and performed with fellow German comedian. Kuhnle appeared on Wehn's BBC Radio 2 series Henning knows best in 2012. In May 2015, Wehn presented An Immigrant's Guide to Britain on Channel 4, telling Radio Times: "hat I really like about the programme it mixes light-hearted issues, with more serious ones to the ultra serious ". In October that same year, Wehn was the presenter of the BBC World Service radio documentary Wall in the Head in which he explored "the invisible cultural and psychological divide" between East and West Germans twenty five years after German reunification following the fall of the Berlin Wall. In October 2018, Wehn appeared in the German episode of HISTORY's TV seriesAl Murray: Why Does Everyone Hate The English alongside host Al Murray.
Approach to comedy
Wehn's comedy frequently employs common stereotypes about Germans, with Brian Logan, writing in UK daily newspaper The Guardian in 2015 noting, "Wehn has made a career out of sending up and celebrating German stereotypes. But that particular ingredient is lower in the new show's mix – with abundant TV and radio credits to his name, Wehn is now well enough established to joke not only about who he is, but what he thinks".
Political views
During the period, in the late 2010s, when the aftermath of the 2016 EU membership referendum dominated British politics, Wehn was an opponent of a second referendum on Brexit in the U. K., saying, "If you were unhappy with the level of immigration two years ago, you are going to be unhappy with it now. If two years ago you felt the country was run by unelected European bureaucrats, I don’t know what would have changed your opinion on that one over the past two years. If you were daft enough to fall for the £350million a week for the NHS lie, if you’re that stupid you fall for something equally daft next time around. I genuinely believe it would be give or take exactly the same. The best you could hope for is 52 to 48 the other way and that would make things a lot worse than they are now."
