Yes, IF you stay Consecutively 90 days or more in the Country (Which many times is, with the OA visa ofcourse). First time in person (almost always with TM47 form). After the first time it's possible to do it online.
Friend of mine needed insurance too for the first extension of the STV. (Did not know because he entered, with Thailand pass, insurance home country (Canada). He used Luma insurance. All online.
Or just use y'r Thai bank app. I think you not need transfering to UK THAT much ? Except when you earn y'r money in Thailand. Then Deemoney seems okay.
Well Dany, when you come in again, you normaly get 30 days visa exemption. But, you need the whole procedure to enter Thailand again e.g. Test&Go. Little advantage maybe, if you start the Thailand pass e.g. 2 weeks before you leave Thailand. Don't know what you need to enter Laos.
, then after 60 days you can ask for this extension (1,900฿). If you have an Non imm OA visa you can stay for a year and go out and in the country as many times as you want. 90 days report still needed ! Every time you enter Thailand, you get another year. So if you leave and come back just before y'r visa expires (the sticker), you get a full year. Watch out, this extra year is NOT multi entry. To keep that year alive (also regular year extensions), you can buy a single or multi re-entry permit
, After the VISA is void, then you can ask for a year extension e.g. based on retirement. Indeed you have to go through the procedure every year and yes, you have to notify imm. every 90 days, which also can be done online