The cheapest way would be to sign up for the basic package click here.
It will cost you £7.00 for the first 3 months then 15.00 per month. Dish, box and card supplied with 12 month warrentee. After a quick calculation this will cost you £156 for the year but you must remember to cancell towords the end of the 12 months giving a months notice. After cancelation you can use the box for free view channels.
Remember to read the T&C before ordering click here