Maybe I'm cynical but it seems quite obvious that the police have a policy of closing the road at every opportunity. The story about having to because of H&S and their officers at risk is nonsense. They must be confusing themselves with marshalls who do have the unenviable task of going into the road protected by just a yellow flag, which seems to indicate to a lot of riders a 5mph reduction in speed. Not all road users are sensible but I would be amazed if anybody totally ignored blue flashing lights up ahead.