I need to apply for my sons first UK passport soon.

 

He was born in Thailand in January. My question is, do I need to get his Thai passport first? or can i successfully apply for his UK passport without it?

 

Cheers

No need for the Thai passport before applying.

Go through the steps here to find the requirements. https://www.gov.uk/overseas-passports

may thanks.

There is one advantage in applying for the UK passport first, as dual nationals have to declare their other passport when applying. If he hasn't got one yet, then you have "nothing to declare". Be careful, though, that the name in which you apply for the UK passport is exactly the same as his Thai I/d, because the names in both passports must be the same and if there was any difference he would have a problem when renewing.

As stated, no you don't.

 

Carefully check the translation of your son's Thai birth certificate and house book entry is 100 per cent accurate (and using the same correct spelling for all names) or you will have problems.

29 minutes ago, Eff1n2ret said:

There is one advantage in applying for the UK passport first, as dual nationals have to declare their other passport when applying. If he hasn't got one yet, then you have "nothing to declare". Be careful, though, that the name in which you apply for the UK passport is exactly the same as his Thai I/d, because the names in both passports must be the same and if there was any difference he would have a problem when renewing.

But the name on the Thai ID is a different alphabet, they aren't comparable.

9 minutes ago, MaeJoMTB said:

But the name on the Thai ID is a different alphabet, they aren't comparable.

A Thai ID card has the name in Thai and English. 

But of course a child will not have one until they are 7 years old.