If you support segregated cycling infrastructure in Hackney

You could make the segregated lane big enough for a bus and have normal bus lay-bys within >it for overtaking purposes.
And then remove the segregation so that if the buses start queueing up you can still cycle >past.
Edit: or put a painted cycle lane on the right-hand side of the segregated bus/cycle lane.

Make it 2 lanes wide, for overtaking buses, or other cyclists. Reduce the car-part to 1 lane in either direction, with no parking, stopping or passing places. Massively increase emissions taxation and VAT on new cars registered in London. Every petrol station will randomly fill 10 petrol tanks a day with sugar.

I'm not quite sure where I lost the plot there.