Might be worth a shot with the free delivery offer, but sadly the Aussie dollar isn't getting as many Great British Pounds as it was a few months ago. Still Marks & Spencers are generally good quality at decent prices:

M&S - 20% off Men's Suits

Sale ends: 27-Aug-2013 23:59:59 EST

Marks & Spencer 20% off Men's suits

Marks & Spencer 20% off Men's suits