Record Cards from 47079 whilst based at Tinsley TMD (TI).
These records date from January 1990 - Last Classified Overhaul 16th Sept
47079 (D1664 57009) Was Withdrawn from Service in the DFFT pool based by
Freightliner in April 1999
and converted to a class 57/06 by Brush Traction - Loughborough in January 2000.
More information can be found here
Wikipedia - BR Class 47 -