I am not a fan. On my commute in this morning I was using a cycle lane to filter on the nearside past stationary traffic in Isleworth when a right turning car took me out. I landed rather ungracefully on his bonnet. Fortunately neither of us was going very fast (15mph my Garmin says) and I am essentially unhurt. Looking at Google Maps (me left to right in that very narrow cycle lane) I see that the lane markings have changed since the satellite photograph as the cycle lane now extends past the driveway to the bus stop. I would normally overtake on the offside but the cycle lane meant the stationary traffic was further out so, with a central traffic island, there was no room. When passing a side road I am always in the primary position or to the offside of stationary traffic but I had not noticed this driveway nor had I seen the gap in traffic that enabled the oncoming car to turn right into my path.
I can now confirm that not all accidents are reported to the police. I shall not bother [edit: actually I shall; I will try to report by email and see if the Metropolitan Police now make reporting easy]- the last time I was taken out on a roundabout and ended up in hospital the police agreed not to prosecute the motorist if she went on a course. I will report it to CTC's SMIDSY campaign instead.