Change of address after applying for First British passport

Hi

Please can some advice as ,I have applied for first british passport last week and I am moving to new flat in 2 weeks time.

how can I now change my address so that new passport and my old passport and naturalization certificate is sent to the new address?

Thanks

Call the passport helpline and ask them. Perhaps you should have waited till you moved before applying to avoid any hiccups or issues.