AOG...perhaps I didn't explain NOW TV as well as I could have done !
First you need to purchase the NOW TV Box...there plenty of buy-it-now, on ebay, where I got mine from. I paid £9.99 for it but here is one for £16:19
http://www.ebay.co.uk/itm/NOW-TV-BOX-BRAND-NEW-BNIB-FREE-HDMI-CABLE-REMOTE-BATTERIES-INCLUDED-NOWTV-/281678228012?pt=LH_DefaultDomain_3&hash=item419554aa2c
NOW TV will work, in a basic form, without purchasing any "packages" but if you wanted to watch this recent Tommy Cooper program, you will need to buy the Entertainment package. I pay £6:99 for it. Its not a minimum contract and you cancel and re-sign up at any time.
One of the oddities about NOW TV, is that you have to give them you bank details, even if you are not purchasing any packages. I think this is because you have to be "member" as you "sign on" every time you tune in.
I reckon for as little as £6:99 a month, this is the best value TV package available at the moment...miles better than even the cheapest Sky package, and no ruddy 1 year contracts. Its easy-peasy to set up, as even I can do it without the assistance of my 14 year old nephew, which counts for something, I can tell you !
I hope its all clear now AOG !