Britain dropped its advice against all but essential travel for 32 countries and territories on Wednesday, but Thailand remains on its red list.

The change will allow people to travel more easily to countries such as Algeria, Malaysia and Senegal as many travel insurance firms do not cover places where the government advises against travel, the Foreign Ministry said.

The government is still advising against all but essential travel for many countries on its red list which include Brazil, Mexico, South Africa and Thailand.

"The FCDO (Foreign, Commonwealth & Development Office) advises against all but essential travel to the whole of Thailand based on the current assessment of Covid-19 risks," the ministry said on the website.

For security reasons, it continued to advise against all but essential travel to Pattani, Yala, Narathiwat and the southern part of Songkhla.

"We're striking the right balance between keeping people safe which remains our priority and giving them the freedom to exercise personal responsibility, while supporting the travel sector," the ministry said.