D1015 'Western Champion' masquerading as D1012 'Western Firebrand' leads Class 40 40145 on the 05:20 Crewe to Penzance railtour through Somerton,Oxfordshire.
These M(ulti) P(urpose) V(ehicles) are used by Network Rail every year as Railhead Treatment Trains to de-contaminate the rails of leaf mulch which causes adhesion problems.