It's not quite as simple as that. Many of my friends own museum piece bikes that only see the light of day when they're going to a show. These are on 'vintage' free tax discs. These bikes then have to be sorned even though there's no cash involved. Many of these codgers have no online facility or ability.
If no on-line facility, i'm sure they have phones.
Make a SORN by phone
Call 0300 123 4321 – use the reference number shown on your V5C registration
certificate, V11 or V85/1 reminder form.
Or you could do it at the Post Office.
I'm sorry but it is "quite simple as that".
If they are capable of taxing and riding/driving said vehicle ..they are quite capable of SORNing it
