By Daily Mail Reporter
Published: 22:08 BST, 29 April 2019 | Updated: 22:08 BST, 29 April 2019
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The new Caledonian Sleeper service arrived in London more than three hours late following signalling problems on the line.
The new carriages in the £150 million fleet of trains made their debut on Sunday night on the Lowlander route between London and Glasgow/Edinburgh.
But the train from Glasgow/Edinburgh to London arrived at 10.27am on Monday instead of the scheduled arrival time of 7.07am following signalling issues.
The Caledonian Sleeper was launched to much fanfare but arrived in London three hours late
Ryan Flaherty, Serco's managing director for Caledonian Sleeper, said: 'We apologise to guests affected by delays to our services last night.
'These were as a result of signalling problems across the network.
'We are engaging with Network Rail to understand why these issues occurred.'
Network Rail said there was also an issue with the train itself.
A Network Rail spokesman said: 'A signalling fault near Carstairs caused significant delays to trains on Sunday, including the sleeper services.
'Our engineers were on site quickly to find and repair the fault, however, the complex nature of the issue meant it was several hours before full repairs were completed.
'We