Here's a strong case for taking primary where it could look to the unititiated that a cyclist was being deliberately awkward
and, "should be in the cycle lane"
http://tinyurl.com/yhjnlfe
Now obviously it would depend on the time of day, bus lane operation etc to some degree, but this innocuous looking junction has a number of potential hazards. It is on the level (slightly sloping down in fact) so at least there is the opportunity for reasonable speed
.
1) As can be seen, cars often nose out into the cycle lane awaiting the opportunity. Even outside of operational hours (as I am guessing from the lack of a traffic queue, this shot was taken) they are often unaware that the bus lane is open to them hours so creep out waiting to join the middle lane
2) There is a post smack bang next to the drivers' side window - potentially distracting enough for a SMIDSY case where a driver is expecting to see a bus or the driver glances at that moment where the post is in direct eyeline between cyclist and motorist. Moving out of the cycle lane and into the middle of the bus lane increases a cyclists visibility.
3) When the bus lane is in operation, there is queuing traffic in the other two lanes usually. The bus lane is not wide enough to allow a bus to pass a cyclist on its nearside and a car on its offside, safely. Also the ignorant and arrogant (dangerous) drivers tend to cut down the bus lane at speed to push in front ahead (the police sometimes lie in wait at the pub car park just ahead)
4) Approaching the roundabout 200 yards or so away, cars begin to cut in before the bus lane ends (even before the OPTIONAL off-road cycle path cuts away from the road). Cycles are not always seen in nearside mirrors before cars pull left. A car suddenly pulling left into you whilst you are in the gutter - no escape route. If you are in primary, though you may be NEARER the car as it turns, you have given yourself the space to swerve left giving you a few yards extra stopping space to get out of trouble.
I know all these things from using this route daily, but I can totally see why it may seem to someone who doesn't ride, or who doesn't know the road, might think primary on the approach to this junction given the presence of a marked cycle path, was being deliberately antagonistic. Regardless, I am not going to be squeezed and squashed by a bus or propelled over a creeping car bonnet for the PR of taking 10mph off someone's speed for 3-400 yards