There are three types of costs:
Application fee – the exact amount depends on the immigration category;
Biometrics fee – £19.80;
Costs of the citizenship ceremony – £80. All applicants over 18 years old must pay for the official ceremony.
You can also pay to accelerate the application process. Normally, application fee and ceremony costs are addedtogether for convenience. There are two most common scenarios:
Naturalisation costs £1,330. The amount includes ceremony costs without a biometrics fee that amounts to £19.20.
Naturalisation costs £1,000. This option is only available for the Commonwealth citizens. The amount includes an application fee and ceremony costs without a biometrics fee that amounts to £19.20.
If you are a child of a British citizen or permanent resident and want to obtain British citizenship by naturalisation, thecosts will amount to:
£1,206 for application processing and naturalisation + £19.20 for biometrics for an adult applicant;
£1,012 for application processing + £19.20 for biometrics for a child who is younger than 18 years old.