Art expert Amy Griffin says the Tate Modern should be equipped to restore the mural back to its original state. But how hard that will be depends on whether paint or marker pen has been used.
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The woman had passed out on the motorway while her baby sat in the back seat.
Samantha Jefferies and husband Clive had been undergoing fertility treatment when he died suddenly, aged 51, of a brain haemorrhage.
Met Office issue warning as 70mph winds set to hit the Northwest in next 24 hours.