Around 350 postal workers packed into a union mass meeting on Sunday of last week to oppose the closure of the East London mail centre.
The huge turnout reflects growing anger at the swathe of job losses at Royal Mail and the strong mood among CWU union members for a fightback.
Plus: 500 on Leeds unity march
Pressure from below has forced a housing director responsible for contracting lethal cladding in west London out of her job
