From your email that you received from Thai Embassy in London requesting additional documentation, it seems either:
1.) they suspect or know that you submitted a Thai E-Visa application in Thailand = asking about departure flights exit out of Thailand and departure exit stamps by Thai immigration....
or
2.) you had submitted a Thai E-Visa application to the Thai Embassy in London, but they suspect or know that you are no longer in the UK and asking about departing flights exit out of the UK....
Well, on the Thai E-Visa website, if one had selected a Thai Embassy/Consulate in China to submit their E-Visa application, then one of the supporting documents you would need to upload and attach is a NIA record which only foreigners (non–Chinese) with a China Resident ID Number and China Phone Number would be able to access and provide....
Well, depending on the Thai Embassy/Consulate, they may not even see any other page of your passport besides the biopage with your photo on it that you scan, as all Thai Embassies/Consulates *in Europe are Thai E-Visa system.
There may be a Thai Embassy/Consulate that may additionally request to scan all the pages of your passport and, even then, would not care if new or old passport, used or unused....
Another Group member has already made entry into Thailand with a DTV Visa at Poi Pet (Aranyaprathet) land border checkpoint.
As with any entry anywhere (land, air, sea) for any country, ALWAYS double-check any entry stamps to see if they are correct or not....
Remarks: the stay period (180 days) should have been 07 October 2024 to 04 April 2025 = the Thai immigration Officer mistakenly did not roll the month dial for changing to the correct month)....
This Post is about Lao Visa on Arrival (Lao VoA), Lao eVisa, and Lao Visas, not about Thai Visas nor Thai Visa on Arrival (Thai VoA):
1.) Lao eVisa is only available at 8 locations, of which Friendship Bridge #3 (Nakhon Phanom—Thakhek) does NOT have Lao eVisa. However, if one were to make entry into Laos at Friendship Bridge #1 (Nong Khai—Vientiane) or Friendship Bridge #2 (Mukdahan—Savannakhet), at those 2 land borders, there is Lao eVisa available
2.) As for the price of a Lao Visa on Arrival (Lao VoA), it is USD $40.- Cash, clean, crisp banknotes. If you are allowed to pay in another currency (Thai Baht), then you will not get a favorable exchange rate and the price in Thai Baht would be about ฿2,000.- Thai Baht
3.) There are no advantages to Lao eVisa, except perhaps a smaller Lao eVisa, as Lao eVisa price is more expensive than a Lao VoA ($55+ vs. $40)
Anonymous participant Well, why did you put in the time, effort, and money (at least 10k Baht + 500k Baht in a bank account) to obtain a Thai DTV Visa, but not use it for 5 Years??
Personally, I understand travel plans can change and things happen in life, but 10k Baht or at least USD $300+ is no small amount; along with proof of at least 500k (~ USD $12k+) in a bank account is definitely not a small amount of money....
you can use your Thai DTV Visa for the first time in December 6, 2029 or later if you would like as the visa validity is 5 years.... and you can enter into Thailand anywhere (land, air, sea) where there are international Thai immigration checkpoints....