Provided you have the valid passport of another country and do not have a British passport, then yes. Remember that a CoE-RoA only allows entry to the UK and is not accepted as a valid document proving British citizenship to other EEA countries. So, when travelling to other EEA countries, you will ...

hI, i would like to ask if I can apply for ROA in the UK. I got my British citizenship last year by naturization , and I have not apply for my first UK passport, Can I apply ROA in this case, many thanks