On Monday, officials were finalising plans to lay on extra rail services for well wishers to travel to the capital. Over the next 24 to 48 hours, timetables will be updated on an operator by operator basis, according to industry figures.
This will allow people to pay their respects to the Queen as she lies in state and to travel to her state funeral on Monday, the first since 1965.
Network Rail, who own tracks, stations and signals on the network, warned that demand will increase from Wednesday when Her Majesty is moved from Edinburgh to the Palace of Westminster.
Network Rail chairman Sir Peter Hendy urged well wishers to check timetables before they travel to the capital.
He said: “The transport industry is working hard to help people pay their respects in London and across the United Kingdom.”
According to industry sources, the Government is reluctant to provide details of extra train services in case it stimulates demand.
One source told The Daily Telegraph that the Department of Transport didn’t want to see an increase in demand.
They said: “The Department for Transport (DfT) is facing a bit of a dilemma.
“If anything, they want to suppress demand rather than encourage it.”
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“A very limited service will be operating through the night on some routes.”
Trade Union bosses have yet to approve the plans but one union source said: “We will be happy to help if we can.”
Officials from the DfT, Cabinet Office, Culture Department and the Mayor of London’s office have been working on plans over the weekend to ensure the capital’s transport infrastructure can cope with the surge in demand.
Compared to the previous week, London Underground journeys increased 3 percent over the weekend, a signal that demand is already increasing.
London Underground said that although it wasn’t going to put on extra trains it could introduce some short term safety measures such as closures, queuing, non-stopping trains or changes to the way passengers enter or exit the station.