The Coradia 1000 family is a family of DMUs in Great Britain, part of the Alstom Coradia family. There are two types in service. They are the Class 175 and Class 180.
Currently, these DMUs are only operated by First Great Western, Arriva Trains Wales, First Hull Trains and Grand Central. They all have diesel-hydraulic transmission.
References
Alstom Coradia 1000 Wikipedia(Text) CC BY-SA