Shell has revealed quarterly earnings nearly doubled as it continued to capitalise on soaring oil prices caused by the Iran war.

The FTSE 100 oil giant reported a better-than-expected underlying earnings haul of 10.81 billion US dollars (ยฃ8.12 billion) for the three months to September 30, up from 5.43 billion dollars (ยฃ4.08 billion) a year earlier.

It unveiled plans to further boost returns for shareholders after the profit jump, with another five billion US dollars (ยฃ3.75 billion) in share buybacks before the year-end, sending its shares 3% higher on Thursday morning.

Campaigners criticised the profit haul, which comes at a time when households and motorists are suffering painful rises in fuel costs and knock-on inflation caused by the conflict.

Chancellor John Healey chose not to increase windfall taxes on oil and gas firms in Wednesdayโ€™s budget despite calls from some to tap into the sectorโ€™s mammoth profits to help pay for household energy support.

Shell said adjusted earnings at its chemicals and products unit โ€“ including its oil trading business โ€“ โ soared even higher, reaching 3.86 billion dollars (ยฃ2.9 billion) in the third quarter, against just 550 million dollars (ยฃ412.9 million) a year ago.

The ongoing conflict in the Middle East has seen oil prices surge past 100 dollars a barrel with no sign of an end to the war or the reopening of the crucial Strait of Hormuz shipping route.

Wael Sawan, chief executive of Shell, said: โ€œShellโ€™s relentless focus on operational performance enabled very strong results in a quarter with continued severe disruption to the global energy system.โ€

Simon Francis, co-ordinator of the End Fuel Poverty Coalition, took aim at the group, saying: โ€œThere is no version of these figures which look even remotely fair.

โ€œShell earns more in sixty seconds than most people in this country manage in twelve months.โ€

Shellโ€™s chief financial officer, Sinead Gorman, told reporters on a call after the results the group was still digesting the autumn budget and its implications, but insisted a โ€œstable and predictable tax policyโ€ was vital for the firm.

She added Shellโ€™s global tax rate stood at 39% worldwide.

Ms Gorman also welcomed the Governmentโ€™s recent move to approve the Jackdaw gas field project and urged the Energy Secretary to give the green light to the Rosebank oil and gas field โ€“ which is part-owned by Shell.

She insisted the projectโ€™s go-ahead would โ€œgenerate tax revenues and support jobsโ€ in the UK.

But environmental groups warned over the climate impact of Rosebank.

Danny Gross, climate campaigner at Friends of the Earth, said: โ€œThe decision on the Rosebank oil field, which is part-owned by Shell, will be a defining climate test for Andy Burnhamโ€™s Government.

โ€œRosebank would be a far bigger climate bomb than the recently approved Jackdaw gas project, and wonโ€™t improve energy security as most of the oil would be exported.โ€

Greenpeace senior campaigner Philip Evans added: โ€œApproving Rosebank would only deepen this injustice โ€“ handing billions more to Shell while trapping us deeper into the doom loop of climate breakdown.

โ€œThe Government must find its spine, end this dark era of fossil fuel impunity, and tax these companies for the untold damage theyโ€™re inflicting.โ€