Gatwick Airport says that there should not be any delays to flights leaving UK airports.
A spokesman added:
We are experiencing similar (problems) to the rest of the airports, and we are working to get people through.People should be able to get off the plane, it is those coming through the immigration process which it is frustrating.
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Officers were given the touching letter at Brixton Station while they were on a reassurance patrol after yesterday's attack
The 52-year-old had previous convictions for violence but was not on the anti-terror watchlist.
In a statement Charlton Athletic said: Keith was a true hero who will be greatly missed by all the Charlton family and everyone at the club.