Bristol is a city, unitary authority and county in South West England with an estimated population of 442,500 in 2015. It is England's sixth and the United Kingdom's eighth most populous city, and the most populous city in Southern England after London. People from Bristol are known as Bristolians. The city borders the counties of Somerset and Gloucestershire, with the historic cities of Bath and Gloucester to the south-east and north-east, respectively.

At-Bristol is a science centre and charity in Bristol, England.