The United Kingdom’s Ministry of Defence confirmed on Thursday morning that the Russian spy ship Yantar has reached the edge of British waters, north of Scotland, after gradually advancing through the country’s maritime perimeter in recent weeks.

Tensions between Russia and the UK have escalated once again after one of its spy vessels in the North Sea was caught shining lasers at RAF pilots in a “deeply dangerous” act of provocation.

Technology being developed at a factory in Plymouth could play a "big part" in defending the UK, a cabinet minister has said. Defence Secretary John Healey formally opened German firm Helsing's Plymouth Resilience Factory which will be used to produce unmanned submarine gliders.

Britain says Russia’s Yantar ship targeted RAF pilots—but the real threat lies under the sea. How vulnerable are the UK’s vital undersea cables to attack?