Let's get the terminology correct right from the start. You didn't come in on a '30 days visa' because there is no such thing. You are British so you came in on a 30 day visa *exemption*. See chart.
It's called an exemption for a reason. Citizens of numerous countries are eligible for that if their stay is for 30 days or less. It's to negate people having to apply for a full 60 day tourist visa from a consulate or embassy outside Thailand.
Looks like you'll need to go back to the UK to apply, depending on what visa you want. When you get back, call the Hull consulate, who are the most helpful and friendly of all.
oh stop the scaremongering, that just isn’t going to happen. Thais are acutely aware of how they look internationally and they want to rebuild tourism so why would they shoot themselves in the foot? Oh wait...
Actually, generally you do. There are individual branches who will bend the rules, but the general rule is a non-Imm visa with WP - SCB were bastards about that years ago, but when I went in with a Thai, all magically was OK.
It all depends on your relationship with the bank branch, tbh. I knew an assistant manager quite well at my local Kasikorn. She spoke excellent English and we chatted every time I came. I managed to sweet talk her into opening an account for an ancient old guy who spent 6 months of the year in Thailand but it is all at the manager's discretion.
It's not a visa on arrival either! ;-) Those are only available for 18 countries and are for only 15 days, not 30.
Canadian, Aussie, whatever, you are from one of the numerous countries who are exempt from a visa and can get a **visa exemption** because you are, er, exempt from a visa if you are staying 30 days or less and from one of those countries..
a ‘tourist visa’ is not one month, it’s 60 days, extendable in normal times by a further 30 days for 1,900 baht.
I think, because you say you are Aussie, you’re referring to a Visa Exemption which gives 30 days stay and can also be extended for a further 30 days for 1,900 baht. Note that was pre-Covid and no one really know anything about what might happen once the amnesty is over.