The academic turned right-wing firebrand has been picked as Reform’s candidate for the Gorton and Denton by-election. But his mantra that ‘Broken Britain’ is down to immigration and civilisational collapse is unlikely to convince voters, writes Alan Rusbridger I t became known as “Dinnergate” – the moment Matt Goodwin, populist professor, GB News frontman and now Reform candidate, realised there really was a powerful cabal running Britain. This is what happened: David Aaronovitch, the erudite