Employees from BAE Systems in Barrow were among guests at a ceremonial event to mark five decades of the UK’s Continuous At Sea Deterrent.

The Princess Royal was guest of honour at the event, held at HM Naval Base Clyde in Scotland.

Princess Anne joined serving Royal Navy submariners, veterans, families and industry representatives at the event, part of a series supported by BAE Systems to mark the 50th anniversary of the UK’s longest-running unbroken military operation, known as Operation Relentless.

BAE Systems is delivering the next class of deterrent submarines – Dreadnought.

The Band of the Royal Marines performed as part of a military parade in front of around 700 visitors.

Among those introduced to the Princess Royal was Barrow-based engineer David Leather.

A former submariner who joined BAE Systems in 2016, David met the Princess Royal and spoke about his work at BAE Systems and his continuing links to the Royal Navy.

David said: "It was great to meet HRH and if you've ever been in the forces it's like being part of a big family. In some ways it's as if you've never left!"

An exhibition, featuring pictures of Barrow-built submarines from the past, including the pioneering HMS Resolution, the Royal Navy's first deterrent submarine, and the Vanguard class, which currently carry the UK's deterrent, was also on display.