title should be changed - they dont call themselves wilko unlike the shop which is actually called wilko...
Its a canon promotion so a lot of places are doing it
WEX also have 10% off L series lenses at the moment.
I actually thought Wilko sold lenses for a second then!
Wilkinson Camera isn't cheap for buying camera equipment. You can nearly always get the same camera or lens for cheaper elsewhere, so a 10% discount might just bring items to 'regular' prices, maybe not even that.