Last year, BBC reported this from police... ...10% of 800 ongoing terror investigations right wing extremists - the rest will mainly be Islamist extremists I would imagine (with some Irish Nationalist/Unionist Terror investigations) ... 1/3 of foiled plots related to Right wing extremists ... fastest growing threat is from right wing extremists, but from a low bade
Of course, it means police and security service resources being spread thinner.