This is a Brother wireless colour laser printer that supports duplex printing, Apple Airprint and Google Cloud Print.
It is £149.99 in PC World, but you can get £50 cashback from Brother using the code Q4C50 and applying at http://www.brother.co.uk/latest-promotions/colour-laser-cashback
| Full terms and conditions are here: http://www.brother.co.uk/~/media/Pdf/BUK/Promotion%20Ts%20and%20Cs/January/Brother%20Colour%20Laser%20Promotion%20January%20to%20March.pdf
It is the same price on Amazon, but when I phoned up Brother they said that the cashback promotion doesn't apply to Amazon because they don't source their printers from Brother UK.
There is also 1.01% TopCashback, or 1% Quidco.
Alternatively, if you don't mind collecting from store, you can buy £150 of giftcards at Morrisons, which gives you 15p/litre off petrol/diesel. On a 50 litre fill up that works out at a saving of £7.50. Even if your PC World doesn't have it in stock (mine in Bolton didn't), they can order it in for you. Unfortunatelly, they won't deliver to your house so you still have to make a second trip back to PC World to collect. This is what I did, and after using a cashback credit card to purchase the vouchers should mean that I'll get a colour laser duplex printer for ~£90 :)