Lest we forget

The UK is commemorating the first anniversary of the London bombings that claimed 52 lives and injured hundreds.

At 0850 BST - when bombs on three Underground trains went off - flowers were laid at King's Cross station, near the scene of one of the attacks.

At midday, a two-minute silence will be observed across the country, including Wimbledon and other events.

A public ceremony will be held later in Regent's Park, with readings and a recital of the names of the dead.

The commemoration comes as Metropolitan Police Commissioner Sir Ian Blair gives a firm warning that London must expect another attack.

"I think there will be further attacks, in fact I know there will be further attacks, but as to whether we will stop those, well we've stopped three already," Sir Ian told BBC News.

And Colin Cramphorn, Chief Constable of the West Yorkshire force - one of the forces investigating the bombings on three London Underground trains and a bus - said he believed other 7 July-style attacks in the UK were "not just fanciful" but "very possible".

Their warnings come a day after a video of one of the bombers, Shehzad Tanweer, was aired on al-Jazeera television, showing the 22-year-old from Bradford warning of further attacks.