That site tells me we've saved about Ā£700 on gas and elec since Feb, plus the Ā£50 money octopus gives you for joining, so that's almost 3 quarters of the year, that would give a lot of leeway for price rises before jumping ship makes sense imo
Also if you look at these "high" gas prices in context of a 12 month view, last winter they were far higher
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I do wonder what would happen if you "moved out" as one person and "moved in" as another eg partner and I have different surnames, could I leave and she joins? This evading the 9 month limit? I'll probably not be finding out but interesting thought.
We did the same with BT broadband when we had a contract get out clause, they said couldn't rejoin that quick so she took it out in her name. We had two lots of Ā£300 gift cards, Ā£120 cashback each and we'd only had the contract a month first time round, it massively reduced the total contract cost down - which was expensive as it was - but think it took it down to about Ā£9 a month or something when we worked it out, didn't even have an interruption in service