I think you are both familiar with the Oracle in Reading. When I was there recently (the day I spent nearly £12 on lunch for one at Five Guys), I was there to drop off my iPhone at the Apple store. I dropped it off, needed to do an errand in Reading, and then return to collect it. The minimum charge at the Oracle for parking now is £4! So my car was probably parked for a total of 1 hour at the most and it cost me £8 as I had two entries and exits. Absolute rip off!!
If it helps, Five Guys has gotten really expensive in the US, too. $12 for lunch for one here (and that's small everything!).
How is the quality of Five Guys, though? We have that on our list of "places to go when I desperately need a good BEEF hotdog."
And the hospital parking is outrageous. I can't believe patients have to pay, even for ER visits.
My wife paid £50 for less than 2 hours of parking to drop me off at the airport. They even charge a pound just to drive through a drop off/pick up lane! Crazy.