Call in your H&S Unit Rep or Area H&S Rep and they will Risk Assess it.
Manager then has to inform customer they are A) Stopping delivery or B) Alternative delivery Point i.e. local post office/secure shop etc
ANNOUNCEMENT : ALL OF ROYAL MAIL'S EMPLOYMENT POLICIES (AGREEMENTS) AT A GLANCE (Updated 2021)... HERE
ANNOUNCEMENT : PLEASE BE AWARE WE ARE NOT ON FACEBOOK AT ALL!