Signed, Sealed, Delivered: Inside the Post Office - Episode Guide

In recent years, keeping Britain's Post Offices open has been costing millions of pounds that the government is no longer prepared to spend.

General manager Michael Larkin has a radical plan to turn the Post Office's fortunes around but it may be detrimental for smaller branches.

One London post office is reinvented as a hi-tech 'concept branch', while Whitstable residents try to stop their branch from moving.