There are 14,000 half price codes available right now via Money Saving Expert:
http://www.moneysavingexpert.com/sho...content=94#sky
Scroll to the very bottom, put in your e-mail address and post code, and a 50% off code will be generated.
"If you're new to Sky (or left over 12 months ago) we've blagged 50% off codes for all TV packages for a year, including movies and sport – full package details below. You'll also get a free £25 M&S voucher. There's a 12-month contract - when this ends you'll pay full price. Please note the additional fee for HD isn’t halved, unless you take the Sky Entertainment Extra+ deal."
I left Virgin in December to join SKY on a 50% deal. I'm saving about £45 per month, compared to what I was paying to Virgin. You have to sign up before the 2nd May however you can push the installation date back until June, to coincide with when your Virgin contract expires.
More price info here:
http://www.sky.com/shop/offers/money...affiliate=true
Certainly worth thinking about.