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Written question asked by Josh Fenton-Glynn (Labour) on Monday, 29 June 2026, in the House of Commons. It was due for an answer on Wednesday, 1 July 2026. It was answered by Keir Mather (Labour) on Friday, 10 July 2026 on behalf of the Department for Transport.

Calder Valley Line: Rolling Stock

Question

To ask the Secretary of State for Transport, how the rate of short formed services on the Calder Valley line compares with the network average.

Answer

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.

Secondary information

Type
Written question
Reference
14228
Session
2026-27
Grouped for answer
Yes
Subjects
Rolling stock Calder Valley line
Link
View this Written question on www.parliament.uk