None of these cars get ticketed, because they have a disabled sticker on them. Which, given they are clearly visiting the hospital, could well be justified. You don't go to the BRI if you can avoid it. But why park on the yellow lines? Is it because they can, and there is no room in the car park? Not quite.
There is room in the car park, at least on this weekend shot. So that's not the reason. Here's the reason, from the United Bristol Healthcare's parking site Terms and Conditions.
2 pounds 20 an hour, 60 quid fine. Disabled parking is only allowed in the few disabled slots. Which at the time of inspection, were all taken up. So disabled people driving to the hospital on a Saturday for some ongoing treatment are given a choice of 2+ pounds/hour for the car park or free parking where the bus stop is. What rational person would not block the bus stop?
Given the patients are making a rational decision: it's cheaper to park on the double yellow lines, why doesn't the hospital recognise the ongoing need for disabled parking and say "anyone with a disabled sticker can park free for the first two hours?". Again, rational thinking.
Every disabled driver parked in their car park would bring in zero pounds/hour revenue. Every space used for disabled parking is essentially lost money. Assuming the opening hours of the hospital are 0800 to 2000: 12 hours/day weekdays, and during those hours the car park was full of cars. That's 185 pounds/week, or 9600 pounds/year for every disabled parking space, or every disabled car parking in a non-designated parking space. If an average of eight disabled cars were to park in the BRI car park (that's the normal number of disabled cars on the yellow lines), that would be an opportunity cost to the BRI of just under seventy-seven thousand pounds per year.
And that's why you get disabled cars blocking the bus stop outside the BRI. Not because the disabled drivers are being lazy and selfish, but because someone in the UBHT with a spreadsheet decided that letting the disabled patients park for free would cost them too much money, and having them park illegally outside was not their problem.