The British teenager killed in Syria is the nephew of a former Guantanamo Bay detainee.
Abdullah Deghayes, 18, from Brighton, East Sussex, is the nephew of Omar, who was held in the United States as an enemy combatant at the detention centre between 2002 and 2007 after he was arrested in Pakistan.
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"Jessica passed away from serious injuries sustained in a motor vehicle accident on 26 December, 2017," a spokeswoman said:
Which? made just one energy company a "recommended provider" this year - the small supplier Octopus Energy.
The Committee warned the Government's "clean growth strategy" did not go far enough to meet targets to cut greenhouse gases.