Tried to tell him that already - only in different words. There is a reason this questions occasionally comes up - but people end up quickly forgetting about their smart vehicle import / export ideas in 99% of cases.
Sure thing. Just me general thoughts on it from hearsay - and why people usually refrain from importing
/ exporting bikes between Thailand and their home countries. But to be honest, I don’t know the details with regards to the UK. So maybe worth digging deeper.
Next to the shipping costs, you would have to pay import duties + import taxes on it. Which would already make it a good bit pricier than in Thailnd. But your bigger (and also expensive) problem comes when trying to register the bike back home, then. It would need to get a pricy evaluation. At least those things applied when the UK was still part of the EU. No idea if things changed since then. Doubt it, cause most things changed from bad to worse.
Unfortunately, requiring signed copies of sensitive documents is a common thing in Thai bureaucracy. If if you hand it out, do it as the smart Thai people do: Use a pen and cross the copy of your document out with a diagonal line. Then sign on top of that line and write the exclusive reason of that copy on the bottom of that line. This way, that copy is way less likely to be misused.
It depends where - as always in Thailand. Officially it should be free. And it is. But in most places, if you want it free they make you wait weeks for it and will send it to the respective address. In some places, like Chinag Mai, you slip 500 THB with the application - and you can collect it the next day. Amazing Thailand. Or just look at it with good will as an express surcharge. That whole CoR BS needs to go as it does not make any sense. All it is is a letter stating what visa you are on (as clearly indicated in your passport) and where you live (as already confirmed in your TM.30 receipt).
Summer holiday season just started in Europe. Flights are expensive until mid to late August now. People spend more money on traveling than ever before. And Thailand is one country with too much of that mass tourism. Try neighboring countries for flights / open jaw flights, e.g. Malaysia, Vietnam … and then hop over.