Council, police and TFL fines I pay. Those from private companies that regulate supermarket carparks, etc. I don't. The private companies call their tickets PCNs but are not allowed to call them Penalty Charge Notices, so they refer to them as Payment Charge Notices. They only legally have the status of invoices. They may threaten to take you to court but 99 times out of 100 they won't. It isn't worth it for them. They pay £5 to the DVLA for your address in the hope of frightening you into paying but if you hold firm and don't pay, they'll go away in time. Enough frightened people they've caught pay up to make it worth their while to spend £5 hoping they'll scare you too into paying, but don't. If they threaten to take to court after "this last letter', just write back saying that if you are issued with proceedings you will contest them in court. You may be bluffing but then so, 99 times out of 100, are they.