The number of post offices open on Sundays has reached 3,000 as the firm tries to keep up with changing demands, new figures show.
The milestone figure was reached when the Bergh Apton branch in Norfolk opened its doors - offering a garden centre, farm shop and restaurant as well as traditional postal services.
Figures from The Post Office show the earliest branch opening time was 3.30am, while other branches close as late as midnight.
Three branches are open 24 hours a day.
Critics claim Britain is now a "borderless" country as figures showed net migration has hit a record high.
Official figures from the Office for National Statistics showed net migration for the year to March 2015, was 330,000, up 40% on the previous year.
Some experts claim the figures are a sign of a growing UK economy.
ITV News Business Editor Joel Hills looks into the "migration effect" on Britain.
The daughter of the late Terry Pratchett has revealed their family mantra features in his final novel.
Fans of the popular writer, who died in March aged 66, queued up at bookshops at midnight last night to get a copy of his final Discworld novel, The Shepherd's Crown.
Today, Rhianna Pratchett revealed that the family's 'magic' phrase, "Mind How You Go", featured in the book which were the last words she had said to her father and grandfather before they died.
In an interview with The Telegraph shortly after her father's death, she said: "We always say to each other, 'Mind how you go', it's almost like a Pratchett mantra for safety."
The book has been hailed as a "magnificent sign-off" by critics with many finding evidence of Pratchett's knowledge that it would be his last book.