How long can a british person stay in the Gambia?

As of my knowledge cutoff in September 2021, British citizens can visit The Gambia as tourists without a visa for up to 90 days in any 180-day period. However, visa regulations could have changed since then, so I recommend checking official sources such as the Gambian Immigration Department, the nearest Gambian Embassy or Consulate for the most up-to-date and accurate information regarding tourist visas for British citizens.