Okay yes so there are quite a few tariffs out there for under the price cap/predicted price cap. I’d recommend fixing for 1 year no longer. Octopus have a 1 year fixed with no exit fees, so if it ends up being more than the price cap (e.g if the price cap goes down later in 2025) you can switch back. But equally E.on have I think a better deal. I’ve just fixed after being on the price cap tariff and it’s worked out cheaper.
With Octupus, there's a £0 early exit fee so I'm happy with that! Thanks everyone for their help!