Quicksilver Sale - 50% off (+10% voucher, +10% if 3 items or more)
Quicksilver are running a sale at the moment that they're calling the "2nd Markdown". Guess it's the second time they've discounted stock.
Lots of their clothing has 50% off.
You can save even more (an additional 10%) by using the voucher code VIPSALES
If you order 3 or more sale items they give another 10% off.
Unfortunately delivery is £3.50 but if you find £35 worth of stuff you like delivery is free.
Be sure to filter by size as lots of sizes now seem to be out of stock. I kept finding t-shirts only available in XS. That ain't me.