The "Home counties" refers to the counties that border or surround London, England but not including the United Kingdom's capital city itself. There is no exact definition of the term and the composition of the 'home counties' is sometimes a matter of debate.
Counties around London in 1921: 1. Buckinghamshire, 2. Essex, 3. Hertfordshire, 4. Berkshire, 5. Middlesex, 6. Kent, 7. Surrey, 8. Sussex (East), 9. Sussex (West).