GP recruitment is a "looming crisis" for the NHS in Scotland, Labour has claimed.

The party has called for the Scottish Government to take action after 50 GP partners raised "serious and detailed concerns" about the family doctor workforce in Scotland.

The partners were responding to a survey of GP practices by Labour's health spokesman Richard Simpson.

He sent out a questionnaire to all 987 practices in Scotland and received responses from 330 practices across all 14 health board areas.

Mr Simpson's survey found that almost one in four GP partners are close to retirement age.

It revealed 92 unfilled GP vacancies and 68 sessional GP vacancies - which covers locums and other doctors who cover sickness and holiday leave.

Dr Simpson said he also received "over 50 emails from partners who raised serious and detailed concerns about their perceived crisis' in GP practice and the need for action".

A separate survey of health boards by the BBC found that 42 practices were now under the control of NHS boards.

Dr Simpson said: "A family doctors crisis is looming in Scotland, but patients across the country are feeling the effects now.

"We are seeing fewer doctors serve more people, an increasing number of practices where the NHS has to step in to sort it out, and an increasing number of vacancies across the country.

"Patients are being let down now but it is set to get even worse unless the SNP Government in Edinburgh get their act together.

"Between GP partners retiring in next decade and emigration rates of newly qualified doctors continuing, we are going to see primary health care come under crushing pressure, particularly as our population ages."

Public Health Minister Maureen Watt said: "GP surgeries run directly by health boards make up a small percentage of the total number of practices in Scotland and it's important to note that this number has changed very little over the past decade.

"This is a legitimate part of the GP contract and happens for a number of reasons. Often it is more appealing to GPs to be in a salaried post, and in rural and deprived areas there can be many benefits for practices to adopt this model.

"It is vital that practices work in a way that best serves the local community and this agreement gives them the flexibility to work with the health board in order to provide the best possible services for their patients."