If you discover you have made a mistake after submitting an application online, please include a covering letter (with your documents) explaining the mistake that has been made and what the correct information should be. Please remember to sign and date this covering letter.
do you have a naturalisation or registration certificate? (You'll only have one of these certs if you applied for British nationality through the Home Office)
我舊果本係passport office hong kong, 咁係答no？