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5 May 2011, 10:34 | Updated: 5 May 2011, 10:36
London firefighters begin a new shift system today.
It is the first change to their working hours in over 30 years, and was at the centre of an industrial dispute last year that led to two strikes.
Staff at the 113 fire stations will move from a nine-hour day shift and 15-hour night shift to a 10 and a half hour day shift and a 13 and a half hour night shift.