Mercedes Benz Sprinter Specialist (engine work)

[John Boy 616]

I live in the Sunderland area and am really struggling to find someone willing to carrry out work on my merc sprinter. Its a 2.1 cdi 311 and the injectors are tired. One of which has started going properly. It probably needs all 4 injectors refurbing / replacing.

Can anyone recommend someone who would take this work on?