The class 88, introduced in 2015, are bi-mode locomotives and can operate on diesel power or AC electric via the overhead lines. The class 88 share the same boy shell as the class 68 and so are identical in appearance, apart from the pantograph fitted to the top of the class 88 for use with the overhead lines.
https://en.wikipedia.org/wiki/British_Rail_Class_88
Ten locomotives have been built and are operated by DRS.
Tony