There is unforunately a catch, but beneficial in a way for when you smash your old one up.
Buy an Xbox One Controller from
THIS link and you'll get £10 credited to your Amazon account.
The steps are bellow as stated on the actual website.
Steps:
How to Claim:
1. Add an Xbox One Wireless Controller (the “Qualifying Item”) to your Shopping Basket by clicking the “Add to Basket” button.
2. When you’re done shopping, click the “Proceed to Checkout” button and place your order for a Qualifying Item.
3. Once your Qualifying Item has been shipped, we'll automatically credit your Amazon.co.uk account with £10 within three days of shipping your order which can then be spent on any Xbox One game that is sold and dispatched by Amazon (“Promotional Item(s)”). The promotional credit will be automatically applied towards your next purchase of a Promotional Item which is placed before 23.59 on 14 February 2015.
Please note: You will only receive a maximum of one promotional credit per customer order.