Rail passengers endured delays of up to two hours on busy routes across England yesterday.
There were difficulties for passengers travelling through the Westcountry and other parts of the rail network linking the south to the north of England and to Scotland.
In Devon, a broken-down train near Pinhoe meant South West Trains had to replace its rail service with buses between Exeter St Davids and Honiton, causing travel disruption to scores of passengers travelling through the region and making connecting services.
Customers were warned that delays could be as long as one hour.
Meanwhile, further up country, problems were caused by another broken-down train at Huntingdon which led to severe hold-ups on a number of services in eastern England.
Worst-hit were customers with the First Capital Connect (FCC) train company who had to contend with long delays between London and Peterborough.
FCC services were unable to run between Peterborough and Huntingdon, while trains operated by the East Coast, First Hull Trains and Grand Central companies were also affected, with delays of up to 60 minutes.
Further north, ScotRail services were hit by a signalling problem near Edinburgh Park. Buses had to replace trains between Bathgate and Edinburgh Park.
There were also problems on the Tube in London yesterday with severe delays on the Bakerloo line following a fire alert at Regent's Park station.
There were also problems for passengers travelling on CrossCountry services.
These were caused by a broken-down freight train near Burton-on-Trent, which led to delays of up to 45 minutes between Derby and Birmingham New Street.
In yet another incident to disrupt services yesterday, safety checks of the line being made between Halifax and Bradford Interchange caused disruption to Northern Rail services.