I was able to email the council today to find out about the ceremony. It looks like they are holding them in person, but like Kezzie, I may have to wait up to six months for the ceremony. I am supposed to get a reply from someone in 10-20 days, so we'll see if Islington has its act together. I did receive an automated response, but that only had links for booking appointments for births, deaths, and marriages or civil partnerships. It did not include information about citizenship (other than EUSS, which has been suspended until further notice).