Calder Valley Line: Rolling Stock
The question
To ask the Secretary of State for Transport, what proportion of services on the Calder Valley line have been short formed in each of the last 24 months.
Answered by Keir Mather
The Department for Transport does not typically hold data on short formations by route. The Short Formations metric which is reported as a Key Performance Indicator is calculated by comparing the capacity operated against a benchmark level of planned capacity, which is agreed by each operator and reviewed at the twice-yearly timetable changes.
The services in scope for the metric vary by operator and it is not therefore possible to compare between operators or against the network average.
Separately, data from Northern Trains show that the percentage of Calder Valley services with fewer carriages than planned is below:
• Blackpool North to York: 5.8%
• Halifax to Hull: 10.3%
• Leeds to Chester: 21.8%
• Leeds to Manchester Victoria: 22.5%
• Leeds to Wigan: 12.7%
• All Northern routes: 7%
This data covers the period November 2024 until June 2026. I have asked Northern Trains to respond to you directly with further data.
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