It's just info I've read. I read not need police certification here. In uk had to pay lawyer to sign docs. Pay 2 nights hotel London train fair. Easier in Thailand.
I got an OA in uk a pain. I was lucky my Doctor said they don't do medical certificates he did a persnal one and said give a tip for the nurses Christmas party. I'm going to cancel it and get an O in Thailand so I don't need insurance and change my renewal date. I made mistake my OA extension is in July UK summer. I can get better insurance from uk on an O visa.
If you can afford it get one if you want one. If you cant don't bother. I live in Pattaya don't need one don't want one. In UK get 2 don't need 2 but want 2 can afford 2 for 2 months a year. Ha ha a lot of 2s. I'm not allowed 2 girl friends.
When I transferred a large amount for property it worked out cheaper using my uk bank only £10 transfer fee. I did this to make certain it showed as foreign funds.