I'm well versed in the concept of train companies overcharging and mistreating customers and engaging in sharp or illegal practices. However I don't own a car, so anything to do with car park charging is well beyond my area of expertise, so hopefully others who are familiar with the relevant rules and laws in this area can comment on this query...
I was at Dolphin Shopping Centre in Poole earlier this month with family members. On our return, the car owners were surprised that they had to pay £4.80 each, for a stay of less than 2 hours, when they hasd expected that a stay of "up to 2 hours" would be £2.40.
Below are the advertised charges:
www.bcpcouncil.gov.uk
Is this sharp practice commonplace? Is it lawful?
Also, what is this lost ticket charge? Are they saying if you lose the ticket, they don't know when you entered? So it's like a 'maximum fare' equivalent? If so, then someone arriving at 0900 and departing at 1900 (10 hours) is better off losing their ticket, to pay £12.10, rather than pay the cost of 10 hours plus the post-6pm fee (i.e. £12.10+£2.40=£14.50), is that right?
I was at Dolphin Shopping Centre in Poole earlier this month with family members. On our return, the car owners were surprised that they had to pay £4.80 each, for a stay of less than 2 hours, when they hasd expected that a stay of "up to 2 hours" would be £2.40.
Below are the advertised charges:

Dolphin Shopping Centre multi-storey car park
Car park at the Dolphin Centre in Poole, BH15 1TA. Open 24 hours a day. It has 1,134 standard spaces and 40 disabled spaces.
However, it turns out that the "up to 2 hours" doesn't just apply if you arrive by 6pm, you also have to leave by 6pm, otherwise you have to pay an additional £2.40, therefore doubling the cost, and that would apply even if you were there for just a few minutes either side of 6pm.Charges
Monday to Sunday, 8am to 6pm:
up to 2 hours: £2.40
3 hours: £3.70
4 hours: £4.80
6 hours: £7.30
10 hours: £12.10
Monday to Sunday, 6pm to 8am: £2.40.
Lost ticket charge: £12.10
Is this sharp practice commonplace? Is it lawful?
Also, what is this lost ticket charge? Are they saying if you lose the ticket, they don't know when you entered? So it's like a 'maximum fare' equivalent? If so, then someone arriving at 0900 and departing at 1900 (10 hours) is better off losing their ticket, to pay £12.10, rather than pay the cost of 10 hours plus the post-6pm fee (i.e. £12.10+£2.40=£14.50), is that right?