good evening to all

I am finally here in UK, it's been a week and 2 days already so far so good

I am planning to get a national insurance but the problem is we both don't know how to get one here in London. Will you please help us

And also, in my passport, I am still using my old last name and is it okay if I will use the last name of my husband with the council tax, nhs and all, is it okay?? I am bit worried that it might complicate the situation in the future.

Thank you so much.

Analou xx