Amid increasing anger at the length of queues for travellers arriving at border control, airport operator BAA has tried to defuse tensions with a leaflet apologising for the problems.
It said people arriving in the country "deserved a warmer welcome" and explained how to complain to the Home Office.
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Showers becoming heavy and thundery this afternoon with sunny spells in between. Breezy along the coast.
Sunny spells and heavy thundery showers this afternoon.
Weight of people trying to sign caused government petition to website to crash as Europhiles try to force a rerun of the EU vote.