Watch the London Collections: Men Autumn / Winter 2015 roundup video London Collections: Men is the UK's biggest showcase of menswear. This year's A/W15 took place from January 9 - 12, and featured such returning brands as Alexander McQueen, Burburry Prorsum, Margaret Howell, Moschino, Paul Smith, Tom Ford and TOPMAN. New editions included Alex Mattsson,…