How should you negotiate a traffic-light-controlled junction that has an advanced stop line for cyclists?

Some traffic-light-controlled junctions have advanced stop lines to allow cycles to be positioned ahead of other traffic. 
Motorists, including motorcyclists, MUST stop at the first white line if the lights are amber or red and should avoid blocking the way or encroaching on the marked area. 
If your vehicle has proceeded over the first white line at the time that the signal goes red, you MUST stop at the second white line, even if your vehicle is in the marked area. Allow cyclists time and space to move off when the green signal shows.