Boris Johnson is on course for another bruising showdown with his fire authority over plans to lock-out striking firefighters.
Members of the Fire Brigades Union have been staging a series of two-hour strikes in a row over pensions.
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All lines to and from the station were blocked near Queenstown Road station in Battersea.
The winner of the men's wheelchair race says he didn't think he'd get on the start line at one point because of the problems.
A passer-by spotted the black and tan coloured snake in Hersham.