Over on his Love Lewisham blog, Nigel Tyrell, the Council's head of environment, has outlined his team's plans to make black bins smaller and green bins bigger, in a bid to encourage people to throw away less and recycle more. The new bins are being rolled out over the next few months and if it's affecting your street, you should get a leaflet beforehand. I supported the plans when we scrutinised them on Sustainable Development Committee and think it's a step in the right direction. I suspect they may be more suitable for houses rather than houses converted into flats. More details here.
Smaller wheelie bins will of course also block less of the pavement than bigger wheelie bins, though clearly the optimum is no wheelie bins blocking the pavement! This particular issue is clearly a bug bear of a number of residents I've been speaking to recently and I'd be keen to hear from more people about how you think the Council should approach the issue.