If anyone's interested, I have a nice older Aero Biker on the 'bay right now. It's marked a 42 but it fits smaller (I'm a regular 42 and it's way too small for me) - measurements on the listing. Harris tweed lining (think it's Harris though it might be Donegal - did Aero use Donegal?). Anyway, take a look if the fancy grabs you!
http://www.ebay.co.uk/itm/282371705813?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649
http://www.ebay.co.uk/itm/282371705813?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649