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Gillian Kay, lead author of the Met Office study, said: "We find that temperatures several degrees above those recorded in July 2022 are plausible, with a simulated maximum of 46.6C. This is close to the theoretical range for London in today's climate – in the upper 40s or even higher – that has been proposed elsewhere."

And sisters Gillian and Nicola gave up plenty of time and opportunities during their own teenage years to support their brother.

Scotland's Net Zero Secretary Gillian Martin said at the committee that the "door's not closed" to companies and inquiries could still be made about working at Grangemouth, adding that Petroineos had also received approaches.

Acting Net-Zero Secretary Gillian Martin said the figures showed that Scotland was leading the rest of the UK in cutting emissions.

Their journey across England's largest uninterrupted path has now been made into a film - The Salt Path - featuring Gillian Anderson and Jason Isaacs.