I think the wrong-way on 2 way streets is only very limited, but there are already quite a few one-way streets with a contra-flow cycle lane. it's useful in places where otherwise you'd have to cycle round a long and complicated one-way route particulary if it takes you off busy roads onto smaller ones.

More serious though is the current pilot scheme of allowing motorcycles into bus lanes. Until now only buses, taxis and bikes have been allowed in bus lanes during hours of operation. This meant that there'd often be nice open lanes for bikes to cycle along in relative safety, particularly on large busy roads during rush hour.

There's quite a lot of controversy on whether allowing motorbikes in is good because it will ease congestion and improve their safety or bad because it will increase risk to cyclists because motorcyclists will be allowed to weave in and out of more lanes. The London Cycle Campaign is very against the plan.