List of major annual events in London, England, by month.
| Month | Event | Location | Year first run |
|---|---|---|---|
| January | Westminster[1] | 1987 | |
| ExCeL Exhibition Centre, Newham[2] | 1956 | ||
| February | ExCeL Exhibition Centre[3] | 2009 | |
| March | Earls Court Exhibition Centre[4] | 1908 | |
| River Thames | 1926 | ||
| April | Greenwich, Southwark, Tower Hamlets, City of London, Westminster[5] | 1981 | |
| April | Putney to Mortlake on the River Thames[6] | 1829 | |
| London Book Fair | Earls Court Exhibition Centre[7] | ||
| May | Royal Hospital Chelsea[8] | 1862 | |
| June | Horse Guards Parade, Westminster[9] | ||
| Barnes Children's Literature Festival[10] | 2015 | ||
| City of London[11] | 1962 | ||
| Carnival de Cuba | Southwark Park[12] | 2005 | |
| Westminster[13] | 1972 | ||
| Canary Wharf[14] | 1996 | ||
| Central London | 2001 | ||
| all of Greater London | 2004 | ||
| July | Hampton Court Park[15] | 1990 | |
| August | Royal Albert Hall[16] | 1895 | |
| Burgess Park[17] | 1999 | ||
| Notting Hill[18] | 1964 | ||
| September | all of Greater London[19] | 1992 | |
| City of London and Westminster | 2007 | ||
| October | BFI Southbank[20] | 1957 | |
| November | City of London[21] | 1535 | |
| Westminster[22] | 2012 |