| 7th January 1927 | The first transatlantic telephone call is made from New York City to London. |
| 15th January 1927 | Teddy Wakelam gives the first sports commentary on BBC Radio. |
| 5th April 1927 | The Trade Disputes Act forbids strikes of support in Britain. |
| 12th April 1927 | The Royal and Parliamentary Titles Act of 1927 renames the ‘United Kingdom of Great Britain and Ireland’ as the ‘United Kingdom of Great Britain and Northern Ireland‘. The change acknowledges that the Irish Free State is no longer part of the Kingdom. |
| 22nd April 1927 | The Great Mississippi Flood affects 700,000 people in the greatest national disaster in the history of the United States. The flooding continues until 5th May 1927. |
| 13th May 1927 | George V proclaims the change of his title from ‘King of the United Kingdom of Great Britain and Ireland’ to ‘King of Great Britain and Ireland‘. |
| 20th May 1927 | The Treaty of Jedda stipulates that Saudi Arabia becomes independent of the United Kingdom. |
| 20th May 1927 | Charles Lindbergh makes the first solo non-stop trans-Atlantic flight, from New York to Paris, in the single-seat, single-engine monoplane, ‘Spirit of St. Louis’ |
| 22nd May 1927 | A devastating earthquake in Xining, China , measures 8.6 on the Richter scale of magnitude and kills 200,000 people. |
| 24th July 1927 | The Menin Gate war memorial is unveiled at Ypres in Belgium. |
| 22nd August 1927 | Two-hundred people demonstrate in Hyde Park against the sentence of Italian immigrant anarchists Sacco and Vanzetti. |
| 23rd August 1927 | Ferdinando Nicola Sacco and Bartolomeo Vanzetti are executed via electrocution for armed robbery and the associated murder of a pay-clerk and security guard in Braintree, Massachusetts. Questions remain regarding the guilty conviction and the fairness of their trial. |
| 14th October 1927 | Birth of Roger Moore, English actor. |
| 12th November 1927 | Leon Trotsky is expelled from the Soviet Communist Party, leaving Joseph Stalin with undisputed control of the Soviet Union. |
| 24th November 1927 | A total solar eclipse occurs over Northern England and Wales. |
| 12th December 1927 | 1,600 people are hospitalised in London after slipping over on the icy streets. |