Deed poll queries

[CoffeeLover90]

Hi, I'm looking to change my child's surname to my own. He's under 16. His father has no contact, he is not named on the birth certificate, although I did give him his father's surname.
I'm looking online at the different ways to apply for deed poll. There's enrolled and unenrolled, some websites say an unenrolled is recognised by all organisations, some say it is not. I want his passports to be in his new name, his national insurance number etc. Basically I never want him to he known by his father's name again.
Which type am I best to go for?
Thank you in advance.

Update- downloaded the forms from gov.uk for an enrolled deed poll. I had thought I only needed 2 witnesses but this appears I also need a witness I've known over 10 years. Well thanks to my abusive ex I am alienated from old friends. And that I need a solicitor signature.
Will the unenrolled only need 2 witnesses (I've known for 5 years) no solicitor involvement and still have the same effect/rights?

Go for unenrolled. It doesn't cost anything and should be accepted everywhere.

Thank you. For unenrolled do I still need a witness I've known over 10 years and a solicitor signature? I've two close friends one I've known 4 years and the other 5 years who were willing to sign as 2 witnesses

No, you don't need a witness you've known for 10 years, nor do you need a solicitor.

I used this place www.deedpoll.org.uk/ just need one witness to sign. Accepted by all organisations: banks, NHS, NI, driving licence etc

Thank you both