Free Traffic Legal Advice

OK, i live opposite a Morrison that i use all the time and have done for a long time, moved here recently from 1/2 a mile away, so its always been my local Morrisons. I walk down the driveway, cross the road, go through the bushes into the Morrisons car park, lovely. I had to do a run the other day and drove up the road to my local pharmacist, and a card shop to grab a birthday card. On the way back home i popped into Morrisons to grab some supplies, did that, walked out, and you guessed it, i walked over the road and home. I am so used to doing that walk for months and months i totally forgot my car was in the car park there. Later on, i came out and saw my car was not on the driveway and after the initial pause, went over the road and drove it back. It was then that i saw the £100 penalty notice for more than 2 hours.

I haven't got a ticket yet as its only been 2 days, but, that brings me to another problem, i will not get the ticket, i just realised that i have not transferred my Log book to my new place, so anything in the post will get binned at my old address by the new occupants. I would assume that these companies dont hang about, and it will be issued quick smart.

Have i really got to pay £100 for that?

Any advice would be happily received.