如果可以，俾地址證明 係俾英國既 定 香港既？
You can renew your BN(O) passport in the UK. Go to your local post office to ask for a passport application form - there is only one kind of passport application form in the UK for all types of British passport. You fill in the form and send your old passport and with payment and supporting documents (including your HKID card) to the local passport office. You may require to go for an interview at the passport office and asked for your photo to be countersigned.
Please note that those who can countersign photos for passport applications in the UK are limited to British and Irish passport holders only.