Well no it isnt. Gas is back to pre war prices. Bu electricity is now about 10 times what it used to be. Clearly it is linked to the cost of renewables,
The UK grid system worked extremely well before the EU 'renewable obligation' pushed reliable low cost generation offf te grid in favour of overpriced subsidised unreliable windmills and solar panels. Then costs spiralled out of control as people were not investing in capacity that windmills would elbow off the grid when the wind blew. If your CCGT plant can't guarantee a high capacity factor base load demand, then there is no point in building it. You build OCGT instead which burns more gas, but is less capital cost to build, knowing that when its needed it will command exorbitant prices.
Naturally this means that he effective result of adding renewables is to keep the gas burn and carbon emissions about the same, but simply treble the electricity price. Which is exactly what has happened.