my wife wants to go back to thailand to have a baby ,,,,she wants to have the baby in thailand,,, my question is ,,if she has the baby in thailand will i be able to get a uk passport for the child........please any help greatfully reseived,,,thanks

There is no problem regarding that, although I understand it might be different if you yourself wasn't born in the UK.

But both Thailand and the UK let their citizens get their nationality through their parents. Your child will have both nationalities, without any problem. Both countries allow for this.