Nigel Farage, who is now threatening to make an eighth bid to become an MP, was pictured this week in Pontefract, West Yorkshire, in his usual pinstripe suit. And he’s not the only one – the stripe is making a fashion comeback, but with a twist this time. Traditionally a sartorial by-word for power, the pinstripe has its origins in the banking world, worn as a way of distinguishing workers at different Victorian banks based on the distance between the…