The answer to the last question in my opinion is it depends.

If Lewisham implement a parking zone that includes all streets within 10 minutes walk of the station then a lot of commuters will alter their habits or perhaps park in the big car park beside the station.

If a CPZ is implemented in one area that provides parking for commuters within 10 minutes of the station then they will move on to the next streets that are within 10 minutes of the station until one by one they are forced out of each area and then they will park at the car park, another station or take the bus etc. You change behaviour by a sanction.

As the council says the parking permit charge is an exclusion charge, you pay to exclude others such as our friendly commuters who are just here for the free park.

Like most people though I favour the 1 hour restriction that excludes the commuters but allows people to drop off their kids at schools or visit the shops.