The family of a missing dad are appealing for information on the four-year anniversary of his disappearance.

Robert Duff, from Kilburn, has not been seen or heard from since January 12, 2013 when he failed to attend his child’s birthday party.

The 41-year-old father’s family, including his two daughters, are distraught and extremely worried for his welfare.

In a statement released by Met Police , they said: “We miss Robert terribly and he is constantly in our thoughts. The hardest thing is not knowing where he is or what has happened to him.

Robert Duff was last seen withdrawing money from a cash machine on Holloway Road

“Hearing his voicemail message is all we have. Someone must know something about Robert’s disappearance and our whole family is making this plea to urge anyone who does know anything to end this hell for us by sharing any information they know.”

The last sighting of Mr Duff was confirmed from CCTV footage which showed him withdrawing money from a cash machine outside a Sainsbury’s in Holloway Road, north London, at 11.12am on the day of his disappearance.

Detective Inspector Lee Dawson of Brent’s Public Protection Group said: “I urge anyone with any information at all on the whereabouts of Robert to call us immediately.

The family of Robert Duff say 'the hardest thing is not knowing where he is or what has happened to him'

“This is a very distressing time for Robert’s family so please help them by coming forward with any information that will help us trace Robert, no matter how old this information is or how small it may seem.

“I also appeal to Robert - if you are in any trouble then we can help you, just call your family or the police and let us know you are safe.”

Mr Duff is a white man, around 5ft 7ins or 5ft 8ins tall. At the time of his disappearance he was of slim build and had short brown hair.

One of the last known sightings of Kilburn dad Robert Duff

He is known to frequent the Holloway, Kentish Town, Islington and Camden areas.

Anyone with any information about the circumstances of Mr Duff’s disappearance, the events leading up to it, or any information since he went missing, can call the Brent Missing Persons Unit on 020 8733 3734 or 020 8733 3092, or contact Missing People on 116 000.

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