A MOBILE phone found under a Blackpool pier could hold a clue to the whereabouts of a missing Glasgow man.

Father-of-one Robert Reid , 46, of Ruchill, Glasgow, was last seen by 46-year-old wife Sandra and their eight-year-old son Lewis at lunchtime on Thursday, April 24.

But his mobile phone was found the next day under South Pier at Blackpool.

Mr Reid, a Scottish Power field sales agent, had visited the St Enoch area of Glasgow in the morning.

He returned home for lunch, even planning a cinema trip with the family that evening and playing a game of chess with Lewis who was on his Easter holidays.

He then drove to work appointments in the Westwood area of East Kilbride but failed to return home.

His red Ford Escort car, registration number P748 XGG, has still not been traced and he has not made contact with any family or friends.

Police described Mr Reid as 5ft 8ins tall, of medium build, with blue eyes, black hair and a fair, fresh complexion.

He was wearing black trousers and shoes, a white shirt, a Scottish Power jacket and tie and he was carrying a black rucksack.

Mrs Reid put out a plea for her husband to come home.

"Lewis and I both love you very much. We miss you and want to have you home," she said.

Glasgow Police described Mr Reid as a 'solid, stable and reliable family man' and said his disappearance was 'entirely out of character'.

Officers hoped the date of his disappearance -- when Celtic played Boavista in the UEFA Cup semi-final -- might jog people's memories.

Robert was also a contestant on Channel 4 quiz show Fifteen To One in December 2001, when he came second.

Supt Paul Main from Saracen police office, Glasgow added: "This is a very difficult time for Mr Reid's family who are desperate to be reunited with him.

"On behalf of the family I would appeal to anyone with information to call us in order that we can provide the family with some positive information about Mr Reid's safety."

Saracen Police can be contacted on 0141 532 3900.