Arrival queues hit three hours in some places – with Manchester, Bristol, Heathrow, Aberdeen and Southampton among those with problems.
Passport e-gates are back up and running and The Home Office says there’s “no indication of malicious cyber activity” being the cause.
Some passengers say they were held on planes on the tarmac, while there were long waits at arrivals.
Lottie was stuck at Gatwick, and Stacey at Stansted.
E-Gates crashed last May, too.
