Image Class 221, VT 18.03 London Euston-Birmingham New Street (1G37), Victoria bridge

Class 221, VT 18.03 London Euston-Birmingham New Street (1G37), Victoria bridge
Class 221, VT 18.03 London Euston-Birmingham New Street (1G37), Victoria bridge 
 A Class 221 speeds northwards passing Victoria bridge near Roade working the 18.03 Euston to Birmingham New Street Virgin service. Yet another example of a diesel working a relatively short distance service entirely under fully energised wires.....can somebody explain how this is correct, please? 
 Keywords: Class 221 18.03 London Euston-Birmingham New Street 1G37 Victoria bridge Virgin Trains West Coast Voyager
Class 221, VT 18.03 London Euston-Birmingham New Street (1G37), Victoria bridge 
 A Class 221 speeds northwards passing Victoria bridge near Roade working the 18.03 Euston to Birmingham New Street Virgin service. Yet another example of a diesel working a relatively short distance service entirely under fully energised wires.....can somebody explain how this is correct, please? 
 Keywords: Class 221 18.03 London Euston-Birmingham New Street 1G37 Victoria bridge Virgin Trains West Coast Voyager

A Class 221 speeds northwards passing Victoria bridge near Roade

working the 18.03 Euston to Birmingham New Street Virgin service. Yet another example of a diesel working a relatively short distance service entirely under fully energised wires.....can somebody explain how this is correct, please?