I am also curious about this. Our son is due to be born in the next weeks, and as I am here longer than 8 years, he should qualify automatically for German citizenship. I am unclear whether registering the birth with the UK consulate authorities is just another expensive and useless burocratic money-maker for the consulate, or actually of some benefit to him. As regards applying for a UK Passport for him, I would like to do so, but it could wait a couple of years if necessary as we aren´t planning on moving back there any time soon and I am still in process of applying for Double citizenship here (application entered pre-31.12.2020). Any one have any useful information on current kid registration procedure?