"Emergency Engineering Work in the Wimbledon area is causing disruption to South West Trains services into and out of London Waterloo.
"All train services between Waterloo and Wimbledon are subject to delays and short notice cancellations.....
"Engineers are on site making the necessary repairs to enable us to reopen the line however we currently have no estimate for when a normal service will resume.
"We are sorry for the disruption to your journey this morning."
More top news
The service was due to start in September but there is no agreement on pay and conditions such as how many night shifts staff will work.
Would you know what to do if you needed help? Here's the official advice from the Foreign Office.
Fans had to register their details on live.adele.com for the advance sales, which started at 9am.