Scores of Thames Valley Police officers are heading to Edinburgh to assist with the policing of the G8 summit.
170 specialist officers from the Thames Valley area will join up with officers from across the country to form a combined temporary police unit of more than 10,500.
Thames Valley Police units headed north include dog teams, firearms officers, protest removal specialists, automatic number plate recognition units and officers trained in search techniques.
An armed response vehicle, manned by two officers, is also in the Edinburgh-bound convoy.
A spokesman for Thames Valley Police insisted the deployment of officers would not leave a hole in the area's ability to tackle crime. He was unable to say how many of the force's officers were from Oxfordshire.
The spokesman said: "We were asked by the G8 to supply a certain number of specialists to use as they see fit.
"We have more than enough officers here to deal with crime and even if there was a major incidents these specialist units have more officers than they need."
"There are a total of 4,600 officers in the Thames Valley Police force, so this is a very small percentage."
Martin Elliott, chairman of Thames Valley Police Federation, agreed the number of police officers going to the summit was not high enough to affect policing in Oxfordshire.
He said: "It is such a low number that we don't think it will have any impact on officers working in the Thames Valley."
Tens of thousands of people are taking part in marches through Edinburgh to put pressure on the leaders of the world's eight largest economies to end poverty at a summit in Gleneagles tomorrow.
Police have assembled a huge fence around Gleneagles in anticipation of a violent re-run of anarchist protests which have disrupted previous G8 summits.
A spokesman for the Scottish Police Information Co-ordination Service, which is organising the logistics for the event, said: "We are working to make sure all the police officers get to the right places at the right time."
A team of 25 cyclists from Oxford, who arrived in Edinburgh on Friday after setting off for the city on June 24, will be among those taking part in marches.
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