Police have taken to the streets of Washington to ask people if they have any information regarding Daniel Moir.
His parents have appealed for him to make contact, after he went missing on Tuesday last week.
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The four people who were all related were killed on the A64 near Malton as they returned from a wedding in Leeds.
GMB's Ben Shephard is cycling, running and swimming from Whitehaven to Tynemouth to raise money for the Children's Heart Unit Fund (CHUF).
Grandfather Stewart Anderson, 54, died after an incident at Durham's Loveshack nightclub in Durham City