The Hertford East branch line, and Lea Valley lines, are both in which country?
Lea Valley lines The Lea Valley lines are two commuter lines and two branches in North East London, so named because they run along the Lower Lea Valley of the River Lea. They were part of the Great Eastern Railway, now part of the "Anglia Route" of Network Rail.
Braintree branch line The Braintree branch line is a railway branch line in the East of England that diverges from the Great Eastern Main Line at and runs north-west to . The route is 6 mi in length and there are five stations, including the two termini. The line is part of Network Rail Strategic Route 7, SRS 07.06, and is classified as a London and South-East commuter line.