Written Question·Department for Transport·UIN HL1696

West of England Line

Tabled: 6 July 2026

Answered: 15 July 2026

Question

To ask His Majesty's Government whether they intend to upgrade the air conditioning on the diesel Class 158 trains between Waterloo and Exeter; and if so, when.

Answer

The Class 158 and 159 fleet heavy maintenance overhaul and internal refurbishment programme started in December 2025. The refreshed units will start being rolled out progressively later this year. The Class 158 and 159 fleet refurbishment programme includ...

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