The first British mail coach service runs from Bristol to London.

A mail coach is a stagecoach that is used to deliver mail. In Great Britain, Ireland, and Australia, they were built to a General Post Office-approved design operated by an independent contractor to carry long-distance mail for the Post Office. Mail was held in a box at the rear where the only Royal Mail employee, an armed guard, stood. Passengers were taken at a premium fare. There was seating for four passengers inside and more outside with the driver. The guard's seat could not be shared. This distribution system began in Britain in 1784. In Ireland the same service began in 1789, and in Australia it began in 1828.

Bristol is a cathedral city, unitary authority area and ceremonial county in South West England, the most populous city in the region. Built around the River Avon, it is bordered by the ceremonial counties of Gloucestershire to the north and Somerset to the south. The county is in the West of England combined authority area, which includes the Greater Bristol area and nearby places such as Bath. Bristol is the second largest city in Southern England, after the capital London.

London is the capital and largest city of both England and the United Kingdom, with a population of 8,945,309 in 2023. Its wider metropolitan area is the largest in Western Europe, with a population of 15.1 million. London stands on the River Thames in southeast England, at the head of a 50-mile (80 km) tidal estuary down to the North Sea, and has been a major settlement for nearly 2,000 years. Its ancient core and financial centre, the City of London, was founded by the Romans as Londinium and has retained its medieval boundaries. The City of Westminster, to the west of the City of London, has been the centuries-long host of the national government and parliament. London grew rapidly in the 19th century, becoming the world's largest city at the time. Since the 19th century the name "London" has referred to the metropolis around the City of London, historically split between the counties of Middlesex, Essex, Surrey, Kent and Hertfordshire, which since 1965 has largely comprised the administrative area of Greater London, governed by 33 local authorities and the Greater London Authority.