Yep.
We also have a community on feddit.uk
Dispite the name. It is for all UK inland waterways fans to chat and share.
I don't live aboard. But the answer to your questions depends on if you have a residential mooring or not.
Those with can do it just like any house.
Those without are refered to as continuous cruisers. It can be annoying. Docs are easy. You can register as no fixed abode. But most use a family or friend address for this stuff. The fact that so much like Rx etc can now be done online. Helps.
!narrowboat is a small community new with 100+ members many with boats. So feel free to ask questions. We could do with more input.