1 | 1923 | - 1923—1923: Roads in Great Britain classified with A and B numbers
- 1923—1923: Hubble shows there are galaxies beyond the Milky Way
- 1923—1923: First American broadcasts heard in Britain
- 1 Jan 1923—1 Jan 1923: The majority of the railway companies in Great Britain grouped into four main
companies, the Big Four: LNER, GWR, SR, LMSR - lasted until nationalisation in 1948
- 16 Feb 1923—16 Feb 1923: Howard Carter unsealed the burial chamber of Tutankhamun
- 28 Apr 1923—28 Apr 1923: First Wembley cup final (West Ham 0, Bolton 2) - 'I'm Forever Blowing Bubbles ' popular song of the time became the West Ham anthem
- 28 Sep 1923—28 Sep 1923: First publication of Radio Times
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