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21 October 2017, 12:20 | Updated: 22 October 2017, 06:17
Police are "extremely concerned" about a missing grandmother believed to have travelled to London a week ago.
Karen Brown left home in Clydebank as her family slept in the early hours of last Saturday.
The 47-year-old was last seen by her husband Jock and daughter Chloe on Friday night when she returned from work at Asda in the West Dunbartonshire town.
She went to bed after a brief conversation but by the time Mr Brown woke on Saturday morning she was gone.
He thought she had started work early and it was only when he went to pick her up at 8pm that he was told Mrs Brown had not turned up or called to say that she would not be in.
Police Scotland said she left her handbag, purse and mobile phone at home and had never gone missing before.
CCTV showed her boarding a bus from Glasgow to London around 8.20am last Saturday and there was a potential sighting of Mrs Brown in the Hamleys toy store in London on Tuesday.
Inspector David Quinn said Police Scotland are working with officers from the Met and Hampshire Constabulary - where her husband lived while in the Navy - to help trace the 47-year-old.
"It has now been a week since Karen went missing and police, along with her family and friends, are extremely concerned for her wellbeing," Inspector Quinn said.
"An extensive investigation is ongoing to trace Karen and officers are working closely with colleagues at the Met as well as Hampshire Constabulary, as she is known to have links to that area.
"The response from members of the public has been fantastic and I would continue to ask people to spread the word and help us bring Karen home safe and well.
"I would appeal to anyone who thinks they may have seen Karen, or who has information regarding her whereabouts, to please come forward.
"I would also appeal to Karen directly to please make contact with someone to let them know she is ok. Her family and friends are desperately worried about her and just want her to come home."
Last week, her husband was joined by their daughters Jemma and Chloe and granddaughter Millie to make an emotional appeal for information.
He said Mrs Brown was a ''bit of a worrier'' but could not explain her disappearance.
She is white, around 5ft 6in with a medium build, collar-length brown hair and brown eyes.
On the bus CCTV she was wearing a pink fleece, light blue jeans and white trainers.