Record Cards from 37712 whilst based at Thornaby TMD (TE).
These records date from October 1992 - Last Classified Overhaul Ex-Works Doncaster Works (DL) 21st February 1992.
37712 (D6802 37102) Was Withdrawn From Service in the WKSN pool based at Toton TMD (TO) By EWS in 12th December 2004
and purchased by WCRC Carnforth where it is currently being prepared for a return to service!.

More information can be found here Wikipedia - BR Class 37  -  Class 37 Locomotive Group - Preserved-Diesels Website  - WCRC