LONDON - Britain's cabinet office is urgently investigating an internet outage which affected the government's website, Prime Minister Boris Johnson's spokesman said on Tuesday.

"It appears to be a wider issue, a global issue, affecting a number of non-government sites, and as you would expect Cabinet Office are investigating it as a matter of urgency," the spokesman said.

(Reporting by Elizabeth Piper and William James; editing by Michael Holden) ((william.james@thomsonreuters.com; +44 207 542 3374; Reuters Messaging: william.james.thomsonreuters.com@reuters.net))