After 1914 and the reintroduction of steam power on the branch, there was a short period during the later part of the First World War when the line to Port Carlisle was closed. When it reopened, the hoped for increased passenger traffic never materialised. As the 1920s wore on, the LNER decided that it would replace locomotive power on the branch with steam railcars.
The first was 'Nettle', the second, 'Flower of Yarrow'.
http://rogerfarnworth.com/2022/05/19...railway-part-3
Sadly, their introduction did not significantly improve the financial position and the length of the line from Drumburgh to Port Carlisle was closed in 1932. .....