This Xbox 360 Wireless Controller seems to be no less than £29.99 anywhere and this website is no exception but they have a £2 voucher available (£2 off for orders over £20), reducing it to £27.99 and they offer free delivery.
If you want to order anything else on the website for more than £5.00 including cd's, dvds and games, you can get an additional £1 knocked off (£3 off for orders over £35.00)
Don't forget to go through Quidco, as they offer 4% cashback on the order, so you'll receive a further £1.12 reducing it to £26.87.
£2 CODE for orders over £20: BRINC3
£3 CODE for orders over £35: BRINC4
Hope this helps everyone looking to take advantage of this offer.