Public sector net borrowing, excluding financial interventions, fell by £1.3 billion to £13.2 billion in August from the same month a year earlier, the Office for National Statistics said.
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The advertising watchdog has ruled the "beach body ready" campaign was not offensive or socially irresponsible.
Britain is set for the hottest day of the year today, with temperatures forecast to hit up to 34C (93F).
The Airports Commission is to publish its report and recommendations on whether an extra runway should be built at Gatwick or Heathrow.