Sorted this with a small atomising spray of isopropyl and a lint free cloth. Used a white lint free cloth to ensure the alcohol did not dissolve anything of the faux suede and only did two rows. Applied alcohol sparingly and just rubbed with the cloth. Cloth remained white and seat returned to black immediately. Left overnight, no sign of return, cleaned and extra 75mm of fob width and left for a week and all is good ! Amazon 50 ml isopropyl spray £3.79. Regards PDE