I have uploaded a couple of pics of my RIB showing the results of Fairy Power Spray. It was a simple affair to clean; spray on, leave for a few minutes and wipe over with a magic sponge (white eraser sponge from pound shop) and then rinse well.
I did sections at a time to prevent it drying out and it has not dulled the surface like MEK did.
Two bottles of power spray cost me £3 and I still have a little left. Chuffed with the results, saved me hours of rubbing!