Hi, my Mum came to visit us in March for 3 weeks, she plans to come again for 12 days in September and is then coming back to SE Asia in late Jan/early Feb 2024 and plans to spend 10 days in the north of the country before heading off to other countries in SE Asia. That means 3 tourist entry stamps in a year from London - is this allowed? How many tourists entries are allowed per year? Need to double check for her!