Mayor Boris Johnson has slammed 2012 Olympic planners for failing to have clear legacy plans despite the "billions" of pounds pouring in.

The pledge to leave a lasting legacy for east Londoners was central in securing the games, and Johnson says these plans are too vague. It's the first sign of tensions between the mayor and Olympic chiefs.

No 'Masterplan'

Speaking to the Financial Times, Johnson spoke of an "ambiguity" about what will happen and that "we need to figure it out pretty fast" with an "overall legacy masterplan."

The Olympic Delivery Authority stresses the importance of a legacy to the most neglected part of urban Britain, yet refused to respond to Johnson's charge. He proposes a "legacy group" within the London Development Agency to spearhead efforts.

The CBI business group today called the games "a once in a lifetime opportunity."