Can I use my home bank account for a NON-O visa based on marriage before transferring to a Thai account?

Last May I obtained a non O based visiting Thai relatives ( there no option for marriage) the financial section says upload bank statement with min £10,000 but this is a typo and you only need £1000. I can't remember if it was one month or 3. The pdf would not upload so I did a screen shot in jpeg and this uploaded straight away. The financial requirements of 40,000 a month or 400,000 is only a requirement for your 12 month extension based on marriage.

Yes, if applying for the visa through an embassy, you can use proof of funds in your home bank account. No need for a Thai account until you're applying for an extension based on the visa you receive from the embassy.