I got done for the same thing, i just took the points, to scared to face a judge, although i was actually stopped at a red, the lights went amber it was 2am on a saturday night in a retail park area, not a crossing or anything, and i went as they went amber, unmarked coppers pulled me over half a mile up the road and wipped me out the car etc.. i was like whats all the commotion they thought i was giving them a chase !! anyway i took the points and the fine.