Indeed, if neighbours don't complain it will be years before the council finds out.
But beware! Some councils are now going through company databases and correlating these with their own records. I got rumbled in my last address after about 5 years. So you need a PO box number (and a postcode which isn't your home to go with that) and make sure that is what appears on any business stationery (which might end up in one of the countless business junk mail databases) or on your website.
Also go on the mail preference service - that will help to avoid junk mailing lists.
Basically working from home long-term requires a multi-fronted approach.