Almost three-quarters of those jailed for Islamist terror offences in the UK have rejected efforts to steer them away from extremism, Sky News has been told.
Sources said 110 of the country's 150 terrorist offenders, who are currently in prison or on parole, are resisting rehabilitation.
Analysts have told Sky News the security services will be faced with an increasing challenge trying to monitor those who retain extreme views once released.
The Government's counter-terrorism strategy, Contest, is aimed at encouraging extremists to re-examine their beliefs and choose a path of non-violence.
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