Rail bosses apologised today after passengers were sold tickets for non-existent trains over Christmas.
Major engineering projects at key London stations mean hundreds of trains will be cancelled or diverted.
Rail watchdog Transport Focus claimed some passengers were misled into buying advance tickets for trains no longer running.
The train companies' umbrella organisation, Rail Delivery Group, admitted Christmas timetables were published too late.
Some London stations will be closed completely between Christmas and the New Year.
Charing Cross, Cannon Street and Waterloo East will shut on Saturday December 23rd and not re-open until Tuesday January 2nd. > The 10-day shutdown will also cause the partial closure of London Bridge and Liverpool Street. > Paddington will close from December 24th until December 27th. Services between Paddington and Reading will be at a standstill.