I've found two of my grandmother's brothers, a postman and a telephone engineer. I've also found my Mum, a telephonist who joined in 1941.
I'm not on there though
, despite the records apparently going up to 1969. The latest ones I've found are 1956
. I joined in 1965.
It also looks as though my Mum's paternal grandfather was a postman for a while - I didn't know that.