M&S have a friends and family voucher weekend with 20% off, RCM is included as is L'Occitane and I am sure other brands are too. Use code JUL15EM to get 20% off.
just used 20% off sensationail code " friendship2015" free postage with orders over £30 and a choice of several small freebies on selected items. (lint free wipes, nail files, buffer, small velevet pouches for nail colour etc)