Thanks for your concern,
For your first entry:
Vietnam offers 15-day visa exemptions with single entry for visitors from the U.K.. However, their
passports should have at least six months of validity upon the date of arrival to meet airlines’
requirements, and their arrival date is NOT within 30 days from their last exit date with visa exemption.
Otherwise, they will need a Vietnam visa.
If you stay more than 15 days please apply for Vietnam visa
for second entry you should apply for visa if you want to Re- enter Vietnam
Please apply at https://www.vietnam-evisa.org/apply-visa.html
Apply visa online, You will get visa stamp on the passport upon arrival, All you need to do is fill your
information in the form and make payment online.
After that, we will send You the approval letter via email, please print it out to board the plane and use
it to get visa stamp on the passport upon arrival.
For any further details, please contact us at email@example.com or call us at +84.327.117.119
Stepfanno Tran (Mr.)