Ciaran Maxwell will appear in court charged with offences linked to the manufacture of explosives and possession of cannabis.
A serving member of the British armed forces has been charged with terrorism offences, Scotland Yard said.
Ciaran Maxwell, who was arrested at his base in Taunton last week, will appear at Westminster Magistrates’ Court later on Friday charged with three offences including obtaining items to be used in explosives.
The 30-year-old serviceman from Exminster, Devon, is also facing charges of possession of cannabis and possession of articles in connection with fraud. The charges include:
:: Engaging in conduct in preparation for assisting another to commit acts of terrorism, including research leading to the creation of a library of documents likely to be useful to terrorists.
:: Obtaining articles connected with an act of terrorism, specifically chemicals and components to be used in explosives and an image of an adapted Police Service of Northern Ireland (PSNI) pass card and uniform.
:: Manufacturing explosives and creating ‘hides’ in which to store them along with ammunition, weapons, tools and resources linked to terrorism.
:: Possession of cannabis with intent to supply and possession of bank cards and security codes for use in connection with fraud.
Maxwell was detained by counter-terrorism officers from Scotland Yard who were assisted by police from Avon and Somerset and Devon and Cornwall forces.
Detectives are continuing to search locations at New Powderham Plantation, Devon, and Larne, Co Antrim, after earlier searches in Carnfunnock and Capanagh parks in the county recovered separate hauls of weapons.
An armour-piercing improvised rocket and two anti-personnel mines were among the cache recovered along with several pipe bombs, magazines and ammunition for an assault rifle.
Bomb component parts and command wires were also uncovered.