Yes, Sparkles, do be careful what you wish for.
There was consultation on a Controlled Parking Zone a few years ago and it was rejected by local residents. These CPZs can be expensive and often cause even more parking problems in the streets just outside the zone.
Maybe it needs looking at again because of the increased use of HOP station, but as it has been said, it doesn't guarantee you a parking space. Something for your local councillors or candidates in the Lewisham elections in May?