Dear vince jagger,
Thanks for your question,
We would like to confirm that
- Citizens of the United Kingdom won't need a visa if staying for fewer than 15 days.
- A gap of at least 30 days between two visa-free visits is required.
- In case of intending to stay for more than 15 days, you should apply for a visa.
If you can meet all above conditions, you can enter Vietnam without applying for a visa
Thanks and best regards,
Camelia ( ms.)