The final legal steps from settled resident to citizen.
ILR to naturalisation: residence, absences and good characterMost people apply 12 months after ILR (immediately if married to a British citizen) — but absence limits and the good-character test are checked in detail.
When a UK-born child is (or can become) BritishA child born in the UK is automatically British only if a parent was British or settled at the birth — otherwise registration routes open up later.
Keeping your original nationality alongside BritishThe UK fully allows dual (and multiple) citizenship — the question is whether your home country does, and some make you choose.
The ceremony, your certificate and getting a passportApproved applicants must attend a citizenship ceremony within 3 months — you become British on taking the oath, then use the certificate to apply for a passport.