Not a family or friends deal but scroll down the page in the following link to moneysavingexpert.com. Enter your email address and postcode and you will get a code which gets you 50% off any TV package for 12 months plus a £25 voucher for Tesco or M&S (HD will be £5.25 extra).
The code also gets you a good deal on Sky broadband but you don't have to take it. The code can be used for TV packages only.
Then just use the supplied link on MSE to sign up. (I was able to use the code over the phone while ordering despite the fact it states you must sign up via the link.)
http://www.moneysavingexpert.com/sho...heap-cable#sky