It seems people fall into two camps when it comes to the humble Christmas jumper. Either you’re convinced of their tongue-in-chic style credentials and can’t wait to unleash your collection of snowmen, robins and reindeer OR the very notion of appearing in public in a ‘comedy’ Santa sweater gives you sartorial chills that no amount of itchy wool will dispel. The B&U team are a fairly even split but whether they went all-out tacky or…