Immigration lawyer Andrew Tingley says that new rules requiring foreign nationals from outside the EU to have a biometric residents permit had left the IT system unable to cope.
It was close to collapse a few weeks ago. It has now collapsed. It's an absolute mess
More top news
Police reopen investigation into brutal murder of David Clarke, 14-years after he was "savagely beaten" to death in his own home.
Flooded in January, farming-driven Malawi ends 2015 facing its worst drought for more than 20 years. And now a slower tragedy is unfolding.
A hapless burglar has died from smoke inhalation and thermal burns after getting stuck in a chimney while trying to rob a house.