That is simply the way the UK gas market works. There is no storage ā your boiler /stove is burning hydrocarbons under which were under the North Sea 3-4 days ago.
Gas is landed at three primary locations ā Aberdeenshire (near Peterhead), Lincolnshire, and Norfolk. There is tremendous concentration of the entire UK gas supply at these gas plant locations. The Interconnector, which supplies imported gas from continental Europe, is co-located at one of these plants.
This concentration means that a shutdown in any plant triggers a spike in the gas price. Similarly, any offshore problem has a knock-on effect. Dozens of wells export via one pipeline.
It simply virtually nothing to do with Iran, although that does impact the oil price, it does not cause spikes in the UK gas market.
I could go on about uninterruptible versus guaranteed industrial gas contracts. However Iām sure there is a text limit on the forum!