A new Post Office opened in Peckham Park Road on Monday.
Based at Classic News and open seven days a week, services include bill payments, cash withdrawals and foreign currency.
It will also offer the usual parcel collection and return.
Michael Monah, area network change manager, said: “We want to make it as easy as possible for customers to pay their bills, withdraw cash from their bank accounts, and send and collect their mail at a time and place that suits them best.”
Its opening hours are from 6am to 10.30pm from Monday to Saturday, and 7am to 10pm on Sundays.