Prosecutors in Scotland have decided not to take criminal action against a 34-year-old Iranian man who was arrested after allegedly attempting to enter Britain’s nuclear submarine base at Faslane.

The incident occurred on 19 March at HM Naval Base Clyde, which sits on the Gare Loch in Argyll and Bute. Two individuals were arrested by police following the incident: the 34-year-old man from Iran and a 31-year-old woman from Romania.

According to the Royal Navy, the attempted breach was entirely unsuccessful. Naval officials confirmed that neither person managed to gain access to any sensitive areas of the high-security facility.

Following his arrest, the 34-year-old man was charged by authorities. However, he was subsequently released pending further inquiries without ever having to make an appearance in court.

The Crown Office and Procurator Fiscal Service (COPFS), which oversees criminal prosecutions across Scotland, has now formally reviewed the case and confirmed that no proceedings will be taken forward.

In an official statement, a COPFS spokesperson said: “The procurator fiscal received a report relating to a 34-year-old man and an incident said to have occurred on March 19, 2026. After careful consideration of the facts and circumstances of the case, including the available admissible evidence, the procurator fiscal decided that there should be no proceedings taken at this time.”

This latest step follows a previous decision regarding the second person arrested at the base. Prosecutors had already determined back in April that no legal proceedings would be brought against the 31-year-old Romanian woman.

To understand why an incident of this nature attracts immediate scrutiny, it helps to look at the vital strategic role HM Naval Base Clyde plays in national defence. The site serves as the home port for the Royal Navy's Vanguard-class submarines, which carry the UK’s continuous at-sea nuclear deterrent. The base is also the permanent home for the Navy’s Astute-class nuclear-powered fleet attack submarines.

While the procurator fiscal has decided against taking the case to court right now, prosecutors have stressed that the decision does not grant permanent immunity if new information emerges.

As COPFS explicitly noted, “The Crown reserves the right to proceed in the future should further evidence become available.” Under Scots law, prosecutors retain the legal ability to revisit the allegations should fresh, admissible evidence be presented to them.

What remains undisclosed by officials is the specific nature of the attempt or why the individuals were trying to enter the perimeter in the first place. I will not speculate on motives where the facts are not on the public record, but the Crown's position is clear for the moment.

For now, criminal proceedings against both individuals remain closed unless further evidence comes to light. I'll be following this one — check back for updates.