but as it is of a unit and on the down slow line at Cathiron it actually works. 720540 and 720539 work the 13.49 Rugby to Wolverton mileage accumulation run in superb autumn light. These units that will end up working out of Liverpool Street and Fenchurch Street serving commuters bear a passing resemblance to the Stadler units that are also operated by Greater Anglia. I sampled the Class 755 recently on a holiday in Norfolk finding them most agreeable making me wonder if I will feel the same about these units when they are eventually introduced?