Photographs have been released by a family friend of two victims of the fatal house fire in Leicester.
The boys have been named locally as 15-year-old Jamal Taufiq and 17-year-old Bilal.
Their mother Shehnila and 19-year-old sister Zainab also died in the fire.
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One person has been confirmed dead and several are injured in the ongoing incident in Las Ramblas.
A number of fatalities and several injuries have been reported after a van has crashed into people in the Ramblas area of Barcelona.
John Underhill said geological changes 55 million years ago mean the UK's geology is unsuitable for shale oil and gas production.