Chris78

Because of your choices in your daily life you are perhaps meeting with a greater mix of uneducated folk than the average Westerner. If you were to mix with a greater amount of uneducated folk in your home country (or folk uneducated to the same extent) you may find yourself facing very similar hostilities or lack of acceptance. No one is simply bothered about your environmental, animal kindness and organic efforts. The hospitals etc might however see the negative and conclude you are draining the system you have no paid in to. You may simply be an enigma to the bus drivers who have no comprehension of why you are not taking a taxi, that might simply be more of a suggestion...
But, to live a life you have chosen in Thailand, or I suspect any other country as a foreigner, you will need to have thick skin.

To apply in Thailand see: How to apply from Thailand (First time applications) and Steps for applying for a first UK adult passport (for applicants over 16)

You don't have to apply for Right of Abode, that is something you have because you are British, and you don't have to apply to become British, you already are. See Chart A on P11 of this:-

http://www.ukba.home...pdf?view=Binary

So just apply for the passport. Start here:   http://www.direct.go...ports/index.htm