What are the best airline options for flying from the UK to Thailand with a baggage allowance of 23kg each?

Travelers from the UK inquiring about baggage options to Thailand generally note that several airlines, including Thai Airways and Qatar Airways, provide favorable baggage allowances, with some offering up to 35kg. Comments suggest that purchasing excess baggage in advance tends to be cheaper compared to additional fees at the airport. For those considering extra space, buying a second seat has been mentioned, but it's accompanied by varying opinions regarding its practicality. Premium economy options from airlines like Finnair and KLM also allow for two bags at 23kg each, yet prices and additional fees for domestic flights within Thailand can fluctuate significantly. Overall, it's recommended to compare different airline policies for the best travel experience.