For those who couldn't benefit from Lightning deal yesterday .
Lightning Deal yesterday
Amazon has another ASIN for the same Canon lens. Seems no difference to me. Dispatched & Sold by Amazon
Canon Cashback is £20 Cashback T&C
Amazon Product LINK (Get Deal is not working somehow) - https://www.amazon.co.uk/gp/product/B00KAQX66Y
edit 19 jan
cashback promotion expired.. gone back to 189 now.