17.45 Cardiff Central to Milford Haven 1B54

Does anyone know why this service is almost always Class 150 or Class 153 rather than Class 197 ?. It is formed from the Swanline service 2B68 and returns from Milford back to Cardiff as 2B26 and hence back to the depot ? Thanks for any help

Mark Carter said:

Does anyone know why this service is almost always Class 150 or Class 153 rather than Class 197 ?. It is formed from the Swanline service 2B68 and returns from Milford back to Cardiff as 2B26 and hence back to the depot ? Thanks for any help

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Likely to retain 15x competency or due to a lack of 197s as they are working routes they werent planned to, as well as having poor availablity.

This is a ideal service to replace as starts and ends at canton. Although i regularly use this train travelling from trips away and it can be frustrating.