Just checked again with energylinx (rather than moneysavingclub) and the cheapest fixed dual fuel tariff available now is £66/year more than my fix due to expire end of March.
I can find a fixed gas tariff £26/year cheaper and a variable electricity tariff only £34/year more expensive, but no fixed electricity tariff better than £60/year more expensive.
So if retail gas prices are down, presumably wholesale prices are too? Given how much of our electricity comes from gas what, other than renewables, is pushing electricity prices up?