A Class 222 "Meridian" heads south on the 4 track section from Trent South Junction - Loughborough as it works a fast service to London St Pancras from Derby.
The Midland Main Line isn't electrified all the way up meaning that services that travel North of Bedford have to be operated by diesel units, such as the Class 222 and the famous "HST" Class 43.
In the photo however you will notice a lot of pylons, perhaps a little ironic. Shortly after I took the photo it rained and I got a bit wet))

Class 222 - https://en.wikipedia.org/wiki/British_Rail_Class_222