I have already given fingerprints and taken a photo. Do I have to do it again?
Yes, if you had your fingerprints and photo taken in connection with your previous permit, you are still required to have them retaken now.
However, if you first booked an appointment and appeared at the police station to submit your current application for a residence permit according to the Brexit regulations (did not follow the normal application procedure) and gave fingerprints and took a photo then, you do not need to do it again. Please note that an automatic email about booking an appointment is sent out when an application is granted. In this specific case, you can disregard that email.