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.
Alston line The Alston line was a 13.5 mi standard-gauge branch line railway that operated in the counties of Northumberland and Cumberland in England. Starting at its junction with the Newcastle and Carlisle Railway line at Haltwhistle, the line ran to the town of Alston. An 1846 Parliamentary Act authorised a line as far as Nenthead, providing an outlet for the lead mines in the Alston area, and plans were made to connect with railways further south. When the decision was made to terminate the branch at Alston, a further act was needed in 1849.