Sky GFast coming to an end - full fibre available

I'm with Sky on gFast up to 150mb. That's coming to an end in a few months.and it'll be up to £40 odd I think then.

BT have rolled out full fibre here - but Jurassic Fibre will be here by the end of the year and they're vastly cheaper than BT.

So, ideally I'd like to get onto a 12 month or 30 day contract for the rest of the year on ultrafast 150 - but BT et al want 24 month contracts. I've spotted IDNet doing it for £42 I think.

Anyone else to consider?

Cheapest is BT Home Essentials FTTP 80/20 @ £20 a month inc vat but you need the followings benefits below:

Universal Credit
(all claimants)
Pension Credit
(Guarantee Credit)

Employment and Support Allowance
(Eligibility rules apply)
Jobseeker’s Allowance
(Eligibility rules apply)
Income Support