They don't even ask your address.
I'm not sure if it's still the case, but Orange used to want a name and address before they would activate the PAYG SIM and allocate a mobile number to it.
I just gave a false name and address. The SIM was activated within minutes. I kept note of the details I gave them, should I ever had the need to speak to them in the future. Glad I did, because I had over £10 credit on the SIM, and Orange disconnected it from their network because the phone hadn't been used for a while (cause of Covid and lockdown). Quick call to them via another unregistered SIM, gave them the false details, and they reactivated the SIM and put £20 credit on it.