M&S have a ridiculous sale on right now in their outlet stores. Since Saturday all clearance clothing and footwear has been hugely discounted. I managed to pick up a best of British suit (originally £800) for £21. I've attached a list of prices for menswear, and it is similar for womenswear. Definitely worth a look as there are some serious bargains to be had. I'm not sure if this is going on in every outlet but at least it is in Stevenage and they have a large clearance section right now.