immigration customs check to see how long you stayed in Thailand before they stamp your visa they see you have over stayed and you pay a fine that what happened to us
You get in to Thailand fine but when you are leaving Thailand at customs you have to pay 500baht a day over stay. So for 2 days you have to pay 1000baht
a PCR test is better then a lateral flow test. I am not sure which test you need to get from Thailand to get back to England, some people say you need a PCR test some say a lateral flow test, I didn't want to get a lateral flow test get to the airport and they say you need a PCR test you can't fly.. it's so confusing and I'd 48 now before you departure..