i chopped in my 996R for my 999R back in May and forgot to send off my part of the v5 notifying the dvla that the bike is owned by a motor trader.
Received notification from dvla when the tax had run out which reminded me to send off v5 but i obviously didnt do it with the required time scales.
I got a £40 fine letter a month or so back closely following a letter thanking me for informing dvla of change of owner, so i ignore £40 fine letter thinking that it was all sorted. Just got a letter telling me that i am being taken to court and the fine is now £80!

For a bike that is neither mine or on the road!