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Wannabe jihadists who go abroad to terror training camps will be stripped of their British passports.

Theresa May said she will ­exercise Royal Perogative powers which allow her to refuse or withdraw passports.

The Home Secretary warned that people had no absolute right to hold a passport.

She said: “Passport facilities may be refused to or withdrawn from British nationals who may seek to harm the UK or its allies by travelling on a British passport to, for example, engage in terrorism-related activity or other serious or organised criminal activity.

“This may include individuals who seek to engage in fighting, extremist activity or terrorist training outside the United Kingdom, for example, and then return to the UK with enhanced capabilities that they then use to conduct an attack on UK soil.

“The need to disrupt people who travel for these purposes has become increasingly apparent with developments in various parts of the world.”

Mrs May said any decision to withdraw a passport which has already been issued must be “necessary and proportionate”.

If a passport is withdrawn, the reasons will be sent to the passport holder, she added.

Operation of the new policy will be carried out by the Identity and Passport Service, on behalf of the Home Secretary.

Under previous guidelines, a variety of reasons could already give rise to the withdrawal of a passport or the rejection of an application.

Mrs May said people facing an arrest warrant, court orders, bail restrictions, international orders from the European Union or United Nations could all have their passports reviewed.

Football hooligans could face travel bans under the new system, Mrs May said.

A Home Office spokesman added: “The criteria for applying the Royal Prerogative have been updated to reflect the current range of powers that can be used to place travel or passport restrictions on an individual, such as football banning orders.”