Thousands of British Airways passengers have been forced to fly without their bags.
Problems with the baggage system in Heathrow's Terminal 5 has caused chaos.
In a statement Heathtrow said: "We experienced intermittent issues with the Terminal 5 baggage system between 26 and 29 June which caused some bags to be processed manually.
"Passengers can now check-in bags as normal.
"Manual processing led to some bags not making flights in time.
"While passengers are receiving bags all the time it will take several days to reunite all passengers with their bags.
"We are very sorry for the disruption passengers have experienced and we are working round the clock with airlines to reunite passengers with their bags as quickly as possible."
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