In reply to Philip:
> Slightly off topic, I don't understand why councils charge for parking in towns with free supermarket parking and then wonder why the footfall in the town have dropped off.
There are few points that need to be understood with regard to Town Centre parking.
Firstly, it tends to be a much more finite resource than supermarket car parking, by virtue of location, on that basis it needs to be carefully managed. Unregulated car park in or close to town centres are generally full by 8am and stay full until after 5pm, this doesn't help attract shoppers. Plenty of town centres still offer some free town centre parking, but this needs to be carefully regulated, ideally with maximum time limits of 20 minutes or so. My local town centre offers 3 hours free parking, but you generally cannot benefit from this, because there is not enough turnover of parking spaces.
Secondly, parking is used to encourage certain behaviours, is it easier to walk, cycle, use public transport, if I am driving, would I be better to park in a large car park just off the ring road and walk the last 200m to the town centre. Lots of cars in town centres isn't good for anyone and has been shown to put people off visiting town centres.
Thirdly, providing parking has a cost. How that cost is met is clearly different when we compare supermarkets and town centres. That said, I can give you plenty of examples of supermarkets in or very close to town centres that charge for parking.
Finally, supermarkets and town centres do not offer the same thing, or at least successful town centres and supermarkets do not offer the same thing. Town centres are not just retail centres and to be fair the supermarket influence on town centre trade is yesterday's story. It is one of many threats to retail, loot at INTU going bust, they offered free parking. Town centres need to be about business, culture, leisure, residential, civic amenity and retail, like they used to be not just about shopping. Lots of things that you cannot get from your supermarket or Amazon.