ESSENTIAL track and overhead line upgrades on the Great Eastern Main line between London Liverpool Street and Norwich have now been completed after eight weekends of work.Over the last two months hundreds of Network Rail engineers have worked to improve the railway at Chelmsford, Witham, Marks Tey and Colchester as part an £170 million improvement plan earmarked for 2015.But the joy for weekend commuters will be short-lived as the rail company have announced that overhead line improvements...
