Olympic gold medallist Ed McKeever receives a briefing ahead of his participation in the Big Waterways Clean Up Project on the Lea Navigation in East London today.
Three and a half thousand volunteers have taken part in the scheme to tidy up waterways in the five Olympic boroughs.
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The action is aimed at firefighters who strike for part of a shift instead of a full day.
Stunned passers-by could barely believe their eyes when part of Covent Garden looked like it was crumbling away and taking off.
The women were originally living at a nearby hostel but forced to move out when funding was cut.