Want to move to England

Hi folks!

I am a 33 year old sole support parent who is thinking of moving to England.

My parents were born in Trinidad and Tobago, a former common wealth country.

My son and I were born here.

Does anyone know if we qualify for a British passport?

If not-does anyone know how we could move to England legally?

My work back-ground is banking and administration.

Any help would be greatly be appreciated.

Cindy