This weekend at Kitbag, they are offering discount on certain spends. If you spend £20, you'll get a fiver off. If you're spending £40, there's a tenner off. These discounts are automatically applied to your basket when you add items to it.
Happy hunting! :)
They sell a wide range of sportswear...
EDIT - if you don't see the automatic discount in your basket, try going through this diret link (copy and paste it):http://www.kitbag.com/stores/kitbag_4_5/christmas/default.aspx?brf=tlm2&portal=B4P5K5NO