[Martin C]

If you think you were driving on the road where and when the speeding offence is stated to have occurred, it's probably best to pay up.

Some years ago I ignored something similar from another country and for years they kept sending me notifications of increasing penalties for non payment and at extortionate interest rates, until the debt was simply enormous. I eventually moved house with no forwarding address in order to get away from it, and I've often wondered what the new occupants thought when the next letter arrived.