Risk analyst Peter Stephen Hill, of Lambert Street, Skipton, North Yorkshire, will appear before magistrates in Leeds next week.

Hill was arrested in Leeds on Wednesday by officers from the Metropolitan Police.

Scotland Yard confirmed he had been charged under section four of the Explosive Substances Act 1883.

The charge alleges that on November 8, in Skipton, "you had knowingly in your possession or under your control an explosive substance, namely component parts including sodium chlorate, sugar, hexamine tablets, matches, bearings, a metal hollow tube and acetone, under such circumstances as to give rise to a reasonable suspicion that you are not making it or did not have it in your possession or under your control for a lawful object."

Although Hill is being held in custody in relation to the explosives matter he was technically bailed on the Official Secrets Act matter until April next year.

It is understood the explosives allegations do not relate to any suspected terrorist-related activity.

Hill will appear before magistrates in Leeds on Monday.