London post office in 1926

[davethepost]

Hi, I have just found that my great uncle was a postman in london in 1926 the recruitment register says that he was based in LPS (SE) I presume that the LPS stands for London Postal Service but has anyone any idea where the SE relates to. Is it roughly the present SE post code

[Bookbox]

Yes, it's the South-Eastern district office.

https://www.postalmuseum.org/wp-content/uploads/2016/10/Family_History_Research_Guide.pdf
(see page 63)