The Hertford East branch line, and Lea Valley lines, are both in which country?
Hertford East branch line The Hertford East branch line is a railway line in Hertfordshire in the United Kingdom, running between Hertford and Broxbourne . The line follows the route of the Lea Valley, serving intermediate towns and villages. It branches off the West Anglia Main Line north of Broxbourne , and could be seen as part of the Lea Valley lines—a collection of commuter routes into London.
St. James Street railway station St. James Street railway station is in Walthamstow in the London Borough of Waltham Forest, east London, and is in Travelcard Zone 3, on the Chingford Branch Line of the Lea Valley Lines. The station, and all trains serving it, are operated by London Overground.