Heathrow axed more than 80 flights and there was also disruption to services from Southend and Southampton - where delays were reported from the Channel Islands. It's the second day of flight disruption at some airports, following delays and cancellations yesterday due to strikes across Europe.
British Airways says "We apologise to customers for the inconvenience and thank them for their understanding."
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A number of teenagers, aged 13 to 15, from Portsmouth, have been treated in hospital, after taking tablets believed to be diazepam.
Thursday Evening's Pollen Forecast
Thursday night's weather for the east of the region