For Unlimited fibre / unlimited evening & weekend calls: Works out to £31.40 per month +(£100 prepaid mastercard) which effectively reduces this to £23.07. You will pay one off £39 fibre activation fee later. I've also got £60 quidco tracked but I'm not sure if this will pay out since I've changed packages in the process, If it works then the cost is £18.07pm
This seemed to work out as the best unlimited fibre deal available with evening and weekend calls) It may or may not be as great for you depending on your needs / requirements & does involve some work.
1) Sign up using quidco to Skys broadband unlimited without TV, this will track with £60 cashback. (The deal is £21.40 for broadband + evening/weekend calls)
2) Once you have signed up you will receive a £100 giftcard within a week (Sky live chat confirmed this)
3) Once you have your giftcard simply ring up sky customer services and say that you would like to upgrade to sky fibre where you will need to pay a one off fee of £39 for activation and your cost will increase by £10 to £31.40 per month.
Note 1) Upgrading your package may or may not void your £60 cashback claim, I can't confirm if they will pay out but the deal works out reasonably cheap anyway so I've taken it.
Note 2) You can upgrade to unlimited calls anytime for an extra £4 a month or go for pay as you go for £4 a month less depending on your needs.
The main concept here is that if you sign up directly for the fibre deal you don't get the £100 prepaid mastercard whereas if you take the standard broadband deal and upgrade instantly you do get the £100 card (The Sky Expert on live chat said its completely fine to do this)