Britain has agreed a landmark £10billion defence deal with Norway to export UK-built warships in a bid to combat the rising threat posed by Russian submarines.

The Norwegian government today announced it would purchase at least five of the new Type 26 frigates, in the biggest export deal of British naval hardware in history.

The vessels are touted as the world's 'best anti-submarine warship on the planet' and will be key in tracking down Russian tyrant Vladimir Putin's secretive fleet of subs as they prowl under the waves.

They will be built at the BAE Systems yard in Govan, Scotland, and will allow a fleet of around 13 specialist submarine-hunters from the UK and Norway - at least five of which will be Norwegian - to unite and defend northern Europe from the Russians.

Britain beat the likes of Germany, France and the USA to secure the trade pact, with Prime Minister Sir Keir Starmer learning of the decision during a call with his Norwegian counterpart, Jonas Gahr Store, on Saturday night.