Have had previous bad experiences with Scottish Power (confusing web site, you can pay them electronically, but they only issue refunds by cheque etc etc)
Then there's the looming UK "Energy Gap" (having less generation capacity then demand, and long lead times for new builds ... oops, too late) ... Have fun, Craig
https://www.imeche.org/news/news-article/closure-of-uk-coal-and-nuclear-plants-to-create-electricity-supply-gap-of-up-to-55-by-2025
(pdf report https://www.imeche.org/docs/default-source/position-statements-energy/imeche-ps-electricity-gap.pdf?sfvrsn=0 )
https://en.wikipedia.org/wiki/Energy_in_the_United_Kingdom#UK_.27energy_gap.27