It's amazing what people don't know about the Highway Code.
"134
You should follow the signs and road markings and get into the lane as directed. In congested road conditions do not change lanes unnecessarily. Merging in turn is recommended but only if safe and appropriate when vehicles are travelling at a very low speed, e.g. when approaching road works or a road traffic incident. It is not recommended at high speed."
"As directed" means just that. When the planners put up a notice saying "Lane closed in 800 metres" they don't mean "Lane closed now". If they wanted to close the lane 800 metres nearer the previous junction they would have done so.
You should not change lanes unnecessarily, but proceed to the closed lane at an appropriate speed, merging in turn where it is safe.
It isn't a queue, it's a lane closure!
Edit: but no, it doesn't apply here. However, some drivers may be unfamiliar with the layout and (without other signs) those in the road may be obscured by vehicles stopped on them. Even if they see the road-surface signs, they are then stuck in the RH lane and need to move left. Often other drivers won't let you do so, resulting in them reaching the roundabout in the wrong lane. In that case, I'd go round again, provided I had been able to see the signs.