London Boroughs within the M25:

1. Barking and Dagenham

2. Barnet

3. Bexley

4. Brent

5. Bromley

6. Camden

7. Croydon

8. Enfield

9. Greenwich

10. Hackney

11. Haringey

12. Harrow

13. Havering

14. Hillingdon

15. Hounslow

16. Islington

17. Kensington and Chelsea

18. Kingston upon Thames

19. Lambeth

20. Lewisham

21. Merton

22. Newham

23. Redbridge

24. Richmond upon Thames

25. Southwark

26. Sutton

27. Tower Hamlets

28. Waltham Forest

29. Wandsworth

30. Wimbledon

31. city of Westminster

32. Ealing