My Father and grandmother are British by birth. My Father was not married to my mother.

My birth certificate shows him as my father, and i have his birth certificate and my grandmothers birth certificate and marriage certificate.

I was born in 1995 but was not registered as a citizen.

What are my options?

Thanks

My Father and grandmother are British by birth. My Father was not married to my mother.

My birth certificate shows him as my father, and i have his birth certificate and my grandmothers birth certificate and marriage certificate.

I was born in 1995 but was not registered as a citizen.

What are my options?