Anti-bomb blocks erected at UK House

A ring of concrete sprang up around the British Parliament late on Thursday as police stepped up security measures after recent suicide bomb attacks in Saudi Arabia and Morocco and warnings of more to come. The blocks were placed strategically around the ancient Palace of Westminster and other government buildings in central London in a bid to prevent vehicles loaded with explosives being driven inside and set off.

London’s Metropolitan Police Service said: ‘‘There is no specific intelligence that would lead us at the moment to issue specific warnings to the public. While our message is still ‘alert not alarm’, we would re-iterate our earlier appeals for the public to remain vigilant.’’