Buy the black Adidas TechFit short sleeve top for £10.99 (reduced from £21.99) and get black TechFit shorts for free. Also works with long black long sleeve top for £12.49 (was £24.99). Very limited availability on the shorts, but available in Gainsborough and a Bradford store to name but two. Availability of the tops is better, but not every store.
Most people (including me) have experience of this deal working on the white top + white shorts, however in this case the web site does not show the (£10) discount and the in-store payment consoles do not show the discount (even if reserved on-line) either, however if you go to the cashier it will (should) come up on their screen with the discount applied, without having to explain the case to them. Does not seem to work for mixing white with black.
The 50% reduction for the for both the black and white short and long sleeve tops and shorts stand as a deal in their own right but no point listing every item as separate deal IMHO.
Credit to JinSlayer in this deal http://www.hotukdeals.com/deals/adidas-tiro-windbreak-jacket-10-97-/824586
that lead to me finding this.
EDIT : And also sonia75 whose comments weren't there at the time.
Hope it helps someone.
Bear in mind my comments on availability.