Not sure if this is the right section but was reading an article in MCN this weekend about Westminster council trying to make permanent their charging scheme which could be used as an example for other councils. See
Campaigning to have all parking taxes for motorcycles & scooters abolished. Westminster NOW, your council NEXT! | No To the Bike Parking Tax to make your protest.
As it happens we stopped in West Bay in Dorset on the way home from New Forest rally and they have set up bike charges in the harbour area that has always been a free bike park...so it is not just London.