Herbie, I've got a tip for you. Please feel free to ignore if this feels too much hassle or if you're not interested for any reason at all.
I got my gas & electric bull today and thought of you! I hardly pay any gas or electricity any more as I'm in credit, and have been for months, as I'm with Bulb.
They're a newish company and they do 100% green electricity. They run a promotion where, if you refer a friend, they get £50 free credit and you get £50 free credit also. I've referred a few friends, enough so I've had more credit coming in that energy we've used.
This is my referral link.
They're also cheaper than al the main energy companies You can compare their rates to your current supplier here.
It's been a great way to pretty much get rid of a bill in a positive way!
One thing to bear in mind, though, is that if you do switch and you're in debt with the old account, then they'll take that out all at once. I forgot that £20 of my monthly gas bill was going towards paying a debt, and British Gas took the whole debt all at once when I left, which was a nasty surprise!
They'll pay any exit fees (if you have to pay to leave your supplier) up to £60 each supplier (gas & electric).
Also, another thing to bear in mind is that I'll get your first name if you do sign up using my referral link. MN is anonymous, of course, and if you don't want to share your first name with me then best not to use my referral link!
Its just a thought, please don't feel you have to! But it's helped me so I thought I'd share.