The train company running services between London and the East Midlands has vowed to improve after a slump in its punctuality record.
Last summer, 80% of Midland Mainline services ran on time.
This year that figure fell to 60%.
The firm blamed train breakdowns and track repairs for many of the problems.
However spokeswoman Emma Knight said action was being taken to ensure things improve.
The company had a new managing director and operations director, and recently created a new position of fleet engineering director.
Ms Knight said: "All these positions are completely focused on improving the performance of Midland Mainline.
"Where we are at the moment is really not good enough for us or our passengers."