The happiest borough in London (according to Twitter) is...

If you're searching for the key to happiness, you might want to hop on a train and take a one-way ticket to... Bexley. It turns out the leafy suburb in Zone 6 is the happiest in London, according to tweets sent in the borough over the past month. A study featured in Somerset House's Big Bang Data exhibition analysed 1.5 million tweets produced in all 33 boroughs between December 15 and January 16. It found the most positive ones came from the outer boroughs, including Haringey, Redbridge, Barking and Dagenham. And naturally, their happy tweets were associated with #Christmas, #happynewyear and #love. 

Tweets were judged against a list of 2,500 English words to determine their sentiment, and things looked kinda bleak in areas like Sutton, Enfield and Lewisham. They ranked as the top three unhappiest boroughs in the capital based on tweet topics that included David Bowie, Liverpool Football Club (#lfc) and Celebrity Big Brother (#cbb). Of course, our moods change like the weather and it seems the people of Bexley aren't always in good cheer; the borough was the unhappiest on Blue Monday. Bummer. 

To see how your borough ranked, check out the full list below:  

1. Bexley

2. Haringey

3. Redbridge

4. Barking and Dagenham

5. Barnet

6. Greenwich

7. Kingston upon Thames

8. Bromley

9. City and County of the City of London

10. Hackney

11. Havering

12. Kensington and Chelsea

13. Brent

14. City of Westminster

15. Islington

16. Merton

17. Tower Hamlets

18. Wandsworth

19. Camden

20. Croydon

21. Hillingdon

22. Richmond upon Thames

23. Hounslow

24. Lambeth

25. Ealing

26. Hammersmith and Fulham

27. Newham

28. Waltham Forest

29. Harrow

30. Southwark

31. Lewisham

32. Enfield

33. Sutton

See what Londoners are thinking in a real-time social media map of the capital at Big Bang Data, on until March 20. 

Or, find out why browsing Instagram makes Londoners happier.