Rush-hour rail problems that plagued passengers on many days in November continued on the first working day of December today.
Travellers whose services were still affected by last week's floods were hit by a combination of difficulties including late-running engineering work.
This over-running weekend work meant buses had to replace trains between Saltburn and Redcar Central in Yorkshire and also between Norwich and Ely in East Anglia.
Further late-running work led to delays to services between Three Bridges in Sussex and Earlswood in Surrey.
In the North East, an overhead wire problem led to delays through the Darlington area, while services in the Hartlepool area were disrupted due to a landslip which occurred last week.
Another landslip last week was still affecting services between London and Horsham in West Sussex, while a signalling problem led to delays between Uckfield in East Sussex and East Croydon in south London.
The aftermath of the floods continued to hit services in south west England, with buses replacing trains on some routes.
Last month saw morning rush-hour hold-ups on many days, with November ending with the severe floods.
Last week, Network Rail (NR) reported a nationwide problem with train service information boards at stations on one morning, prompting the Office of Rail Regulation (ORR) to express concerns.
The ORR is also worried about NR's long-distance train service punctuality record.
Today's latest set of hold-ups for commuters come as they prepare for an average 4.2% season ticket fare rise in just over four weeks' time.
Some commuters in Kent will be paying almost 6.5% more for their annual season tickets.