From 8 January 2025, the UK Electronic Travel Authorization (ETA) system will be activated for many countries, which is a travel authorization not an entry visa with a processing time of 3 days (unless additional procedures are required) for a fee of 10 pounds sterling.
The decision applies to holders of Caribbean passports (except Dominica, which requires a visa), and also includes holders of American, Canadian, and other passports.
For more details about the ETA, you can watch this video, or read this article.
