More than 4,000 south of the borough residents may have to find a new GP surgery in what has been described as a “real blow for patients”.

Hook-based Gosbury Hill Health Centre, which opened in 2010, will close on September 30 this year and its 1,662 registered patients will have to find an alternative GP.

The future of Grays Medical Practice, that runs from the same building in Orchard Gardens and is owned by the same provider, is uncertain after contract holders GP Partners confirmed they would also be leaving in September.

The surgery’s 2,535 patients will have to find another GP if a new team of doctors cannot be found.

Kingston and Surbiton MP James Berry said he was concerned that dispersing the surgery’s patients will put pressure on appointments at the three other practices in Chessington and Hook – Orchard Practice and the two at Merritt Medical Centre.

He said: “This is a real blow for patients. The doctors who run the surgery are not continuing with the contract, and we can’t do anything about that.

“We need to ensure that other doctors are encouraged to take over the contract so that the surgery can stay open.

“I’m particularly concerned by the short timescale until September for finding doctors to take over the contract and going through the NHS’ procurement process.”

A letter sent out to Gosbury Hill patients from Kingston CCG stated that practices with fewer than 6,000 patients were deemed “not financially viable” by prospective providers.

The appointment based ‘walk in’ service that runs out of Gosbury Hill will move to Surbiton Health Centre with decreased opening hours.

The move was part of an extensive and criticised consultation last year.

Kingston Carers ambassador and Surbiton Health Centre patient Anne Blanche said “Those who do know about the walk in are confused that an appointment is necessary.

“This is not a proper consultation. So many questions have been missed out.”

Dr Naz Jivani, chairman of Kingston CCG’s governing body, said: “Continuity of care for our patients is paramount.

“We are ensuring that affected patients are informed and fully supported in their transition to surrounding GP practices.

“We recognise that change is difficult, but necessary in order to secure sustainable and affordable health care in the future.”