I cancelled my Sky TV last month, which I was paying £27.50 per month for. My reason was because they started stiffing me on regular (non fibre) broadband. Funny thing was I never took broadband out with Sky, but O2 some years ago. Sky bought out O2s broadband business. When the sale was announced, I went to cancel due to professional knowledge of Skys dire customer service on broadband. At the time Sky weren't due to actually take over for some time and O2 retentions were giving customers 12 months free broadband to stay so I took it. Broadband would be £7.50 per month thereafter.
Fast forward 18 months and Sky started stiffing me to the tune of £15 a month for ADSL broadband (not including line rental, which was with BT). I telephoned to get the overcharge refunded and was told it was my fault because I didn't move my line rental to Sky

How I laughed.
I promptly cancelled both broadband and Sky TV despite being offered everything for £20 a month and a £45 credit on my account. I really wish I had recorded the call with retentions. The guy kept asking me to sleep on it rather than make a decision whilst angry that I would later regret! I asked him if I sounded angry (I was perfectly calm) and assured him there would be no regret on my part.
I now have freeview TV and 12 months free BT fibre. I miss the Discovery and History channels a little, but no regrets. Once I was fully de-Sky'd (they can hold on to your broadband line if there are any disputes on your account), I telephoned my bank and told them of Skys abuse of the direct debit guarantee. I had a load of charges reversed, which will pay for a nice Freesat PVR box.
Regrets? Don't be silly. Sky need to realise who needs who more, but then again when so many people are happy to fork out £50 - £100 a month, why should they care.
12 million customers in the UK and Ireland.
£7.8bn revenue, £1.35bn profit (UK & Ire)
£11.28bn total revenue including Germany and Italy.
The only people smiling are Rupert Murdoch and guys who excel at kicking a ball around a field.