I placed an order with Look Fantastic this morning and received an offer to claim £20 cashback with Great British Discounts - this page came up immediately after the confirmation page and looked very authentic (it wasn't via email and wasn't a traditional "pop up" type page as far as I could see). Long story short, it appears this company is decidedly dodgy. Lots of complaints online about them. Unfortunately for me I had already attempted to register with them. The message kept coming up that there was something amiss with my credit card details. I have contacted them via email and also phone. They are evasive to say the least - they claimed it wasn't policy to confirm in writing that they have cancelled your account. I have finally received a confirmation email but tbh do not trust that I am not somehow going to get ripped off.
I have contacted Look Fantastic to make them aware - other forums indicate that this company have aligned themselves to Very & Littlewoods, amongst others - without permission or consent from the companies themselves.
Just thought I would let you all know.