Apply for Irish Foreign Births & passport, move to UK with Non-EEA family

[Abarthturbo]

Hi,

I am enquiring on behalf of a family member.

Grandfather born in Dublin 1917 to British father and Irish mother.
Lived in England and has British passport(citizenship by decent)
Moved to South Africa pre 1950, marries South African and remained there.
Had 2 children son and daughter(born 1951) who holds South African citizenship.
We understand that they can apply for Irish passport as they are Irish by birth.

The daughter(1951) has several children and non were registered in the Irish foreign births register.
Her son born in South Africa in 1983 who has South African citizenship would like to register his birth and then apply for Irish passport.
He is also eligible to apply for a UK ancestry visa.

He has not lived in Ireland or the UK before and his plan is to live and work in the UK with his wife and 2 children(under 18).

If he opts for the Irish passport route and is successful, what visa is needed for his wife and 2 children?
Also is there anything further he needs other than his Irish passport?

Thanking in advance for your advice.

[secret.simon]

If he acquires Irish citizenship and moves to the UK, he will need to meet all the same requirements (£18,600 annual income, English language test for spouse, etc) as a British citizen in the same situation.

I believe that the visa requirements for the dependants of an Ancestry visa holder are simpler and less restrictive. But I have no knowledge of the details on that front. So wait for others to comment.

It may be better if he applies for Ancestry visas for himself and his dependants, arrives in the UK and then applies for Irish citizenship.

[CR001]

Also note, that FBR applications are currently taking around 2 years. Plan accordingly.

[Abarthturbo]

Thanks all for your advice, I will pass the information on and most likely he will go the UK ancestry route.