I saw my first Christmas House last night. You know what I mean, the houses that I always refer to as Griswold houses after one of my favourite Christmas films, ‘National Lampoons Christmas Vacation’. I did think it was a little early to be decking the halls as such, but it did give me a warm glow too – Christmas is coming! With all that in mind, my Friday shopping focus could only look at one thing – the Christmas Jumper. I remember when these were something only worn by people trying to be funny or ironic – the dreaded gift from nans and ancient aunts in possession of a…