The stupidity of this bike lane has me so grumpy that I'm posting a picture of it again .
It's below the minimum recommended width; and in the wrong place (per the Highways Agency Design Manual for Roads and Bridges, Volume 5, Section 2, Part 4, Advice Note TA 91/05).
It encourages drivers to think there is sufficient space to overtake (see Highway Code rule 163 " give motorcyclists, cyclists and horse riders at least as much room as you would when overtaking a car ").
It has a rainwater drain that occupies two-thirds of the width which all but guarantees that a cyclist will be forced to move right (which is likely to become an unpleasant reminder of Rule 213 " Motorcyclists and cyclists may suddenly need to avoid uneven road surfaces and obstacles such as drain covers or oily, wet or icy patches on the road. Give them plenty of room and pay particular attention to any sudden change of direction they may have to make. ")