Awkward scenario.

Having been married and living in Thailand for 5+ years and in Spain before that,

having a Thai born daughter now holding a British Passport and having taken both

wife and daughter to the U.K. last year - How does one qualify for settlement if

having No Property or Financial Assets in the U.K......?

Would a healthy Thai Bank balance be sufficient and if so, how much would the

British Embassy look for you to have.....?

As you and your daughter are British citizens then you both have the right to live in the UK and your wife can live there with you, no matter how long you have lived abroad.

You obviously need to show that suitable accommodation has been arranged (staying with family or friends is fine, as long as there is at least one room for the exclusive use of you and your wife and another for your daughter) and that you will be able to support yourselves without recourse to public funds. How much you need in savings etc. is flexible; it depends upon your circumstances, employment prospects etc.

See Chapter 9 - The maintenance and accommodation requirements.