Here is a guide of how to cancel any of Sky services – this include Sky sports cancellation (on Now TV and and Mobile also)
First of all, you can always find information on Sky cancellation page
Please remember that outside of the cooling period you will have to pay fee for your cancellation out of contract. You can check Sky cancellation fees here: http://storage.sky.com/prod/helpcentre/UK_ETC_24_December_2019.pdf
Sky have a dedicated page for Sky Broadband cancellation.
Early termination charges only apply if your subscription ends before the end of your minimum term, for reasons other than those permitted under your contract. Please read your contract for more details. Your Sky Mobile contract is available at sky.com/mycontract (sign in with your Sky iD). from: https://www.sky.com/help/articles/charges-for-ending-your-sky-contract-early
Some pepole cancel Sky just to get a better deal, that is fine, and its called a swich. If you need to switch from Sky, you should first member that you can! negotiate with Sky, its OK and you will find that some bargaining can reduce the price you pay or get you some free perks on the house, why not!
You can get Sky deals on the Sky official deals page, but remember – you can also find some great deals and coupons if you sigh up for couple of years with them (Cheese Louise!)