Thank you to Mike R for this information:
Car Parking Derby Station – Be warned
I had a bad experience when I left my car at the Point Parking Site – RingGo 2860 last Wednesday when I was charged at the rate of £1.54p per hour for 15 hours car parking while I was in London for the day – total cost £23.10p Normally I expect to pay about £4.50p for 1 day parking. Next day I complained to the owners who have now refunded me all but 60p. If you are in London for the day, do not pay at the hourly rate, book 1 day instead. Their website advertises short stay car parking at £1.50p per hour and all day parking at £4.50p. I noticed the car park was almost empty – it is normally full – not surprising!