Should the United Kingdom join the United States and Israel in a war against Iran?

The United States and Israel are engaged in military strikes against Iran, targeting energy infrastructure like the South Pars gas field and prompting Iranian threats to Gulf shipping and retaliation. UK Prime Minister Keir Starmer has publicly refused to join the offensive war, limiting British bases such as RAF Fairford and Diego Garcia to defensive purposes amid pressure from US President Donald Trump. UK wholesale gas prices have surged 140% to 171 pence per therm due to disrupted energy flows, raising household energy costs and economic risks.