Can I correct an incorrect passport expiry date on my Thai tourist visa?

Yes I would contact them and get them to change, but I would also be checking the valid until date on the visa, as you not coming until November. To make sure that works in with you travel plans. Good luck.

The UK Embassy issues the eVisa so correcting it will just be a case of re-issuing the PDF.

Tbh they probably won't notice. But are you prepared to take the risk?

If it's wrong, it might not be a problem. Or it might be a problem. There's no real way to know if some airline agent or immigration officer will catch the discrepancy and cause an issue over it.

I'd definitely get in contact with the embassy and ask them to correct it.

The best way to get in touch with the London embassy is by Facebook messenger.

Send one message with all relevant details something like:

"Hello I received my tourist visa and my passport expiration is incorrect.

My name is XXXXX

My passport number is XXXXX

My visa number is XXXXXX

I received my visa by email on xx/xx/xx

Thank you"

Where do you think the month is incorrect?