Unfortunately, i don't know how quickly it takes to process a Subject Access Request (SAR) with the UK Border Force (within the UK Home Office), but make a Request for your own "Entry and Exit Travel History to and from the UK over the past 5 years", specifically, make a request for your Latest Entry into the UK
One can also request Entry and Exit History with Thai Immigration, but it is a paper form and manually would be submitted in person to Thai Immigration (in Thailand)
No DTV E–Visa can be issued or converted inside Thailand, and only having a Marriage Certificate with the main DTV E–Visa holder is possible for a Spouse DTV
Do you need a visa for Hong Kong? For a short trip to Hong Kong, then many countries do have free visa exemption entry into Hong Kong? What country's passport is going to be used?
Well, this is a DTV E–Visa Centric Facebook Group, and with that 10k Baht already paid, which is nearly the DTV E–Visa Fee, so if you have 500k Baht (or equivalent)+ in a bank account, then perhaps apply for a DTV E–Visa, as it is Multiple Entry for 5 Years vs. just a 6 Month Multiple Entry Tourist E–Visa
Thai Immigration had caught a Chinese Citizen who obtained Vanuatu Citizenship (Vanuatu Citizenship by Investment), changed their name with Vanuatu and used a Vanuatu Passport to enter Thailand, but Thai Immigration biometrics caught this Chinese/Vanuatu Citizen (different names in the 2 Passports) who is wanted for billions in real estate Fraud in China