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Concern is growing for a 45-year-old man who went for a walk at a south London park two days ago and never returned home.

Robert Gibson was last spotted on CCTV at a Co-op supermarket in Central Hill but has not been seen since.

According to police, Mr Gibson left his Gipsy Hill home at around 3pm on June 13 to go for a walk in Dulwich Park.

Police say they are growing "increasingly concerned for his safety and wellbeing" while family and friends have been handing out hundreds of flyers in a bid to find him.

Mr Gibson, who is well known in the area for campaigning to save his local library, frequents Dulwich and Sydenham.

He is described as white, around 6ft tall, with a slim build and grey hair.

Mr Gibson wears black-rimmed Prada glasses and is possibly dressed in a blue or grey t-shirt with green or brown khaki trousers.

Anyone with information should call police in Lambeth on 101 or the charity Missing People on 116000.