That wouldn't make any different anyway unless you knew who actually lives there because the forms are sent to the 'occupier' rather than a named person.
Which bit wouldn't make a difference?
If I filled one in, in the name of W4nky McSh1tfest, with clearly false data, and sent it in (in paper form or online), the authorities, if they check such things, would come back to the occupier of the property, who threw it away - I don't know if there's a penalty for taking the piss, as well as non-completion, but the occupier would have to prove they hadn't sent the form in. I wouldn't necessarily be doing it to get at a particular person, just to cause trouble. Or I might happen to want to cause problems for the occupier of a certain address, without knowing who they actually were. If I happened to find a discarded form in a box habitually full of unrecyclable crap and half full tins of beans, believe me it would be tempting. Almost as tempting as the thought of posting the contents of the tin back through the letter box....
Taking the address and internet code off means the form can't be sent in, physically or online.
The moral anyone can take away from this, is not to piss off your binmen.
