I have to admit that I have never eaten dog and I don't fancy the idea. However provided the dogs have a reasonable and are humanely killed, I don't think its any worse to eat a dog than to eat a cow or a sheep or pig.
I feel that rescuing animals which suffer cruety in Thailand like this woman has done
www.bbc.co.uk/news/uk-scotland-23785231
is a poor use of money. She has done nothing to improved the lot of dogs in Thailand.
In the UK there are lots of healthy dogs which get put down every year because no one wants them. Why could she not have given a Scottish dog a home? Sadly there is plenty of animal cruelty in all parts of the British Isles. The costs of paying for animal from Thaliand to fly to the UK and be quantinened would have saved numerous dogs in Scotland.
Rather than trying to stop dogs being eaten surely it would be better to set up farms and humanely kill dogs that are destined for the table just like sheep in the UK. (Ie. with similar hygiene standards to the UK.) Saving one dog by bringing it to England is not going to improve the dog meat trade in Thailand.