The market town in Upper Teesdale expanded in the early 19th century when the London Lead Company moved its northern headquarters there from Blanchland in Northumberland.
[3] A fountain was erected in the town in 1877 to honour Robert Walton Bainbridge, superintendent of the London Lead Mining Company.
[4] Middleton-in-Teesdale was the terminus of a railway line from Barnard Castle until this was closed as part of the Beeching Axe.
The Wynch Bridge from 1830 close to the Low Force waterfall was built to allow miners to reach the Middleton mines.
[6] On 20 June 1939, a British American Air Services De Havilland Dragon Rapide (Registration:G-AERE) flying from Heston Aerodrome to Newcastle Airport crashed at Forest-in-Teesdale near Middleton-in-Teesdale.