It's probably me and how I read headlines. The 'Up to' and 'starting from' doesn't really register. It's the 15% and £50 that sticks out. Nice find though and, thanks for posting.
I did place both codes and their discount amounts in the description. I'm wondering if it's not as noticeable for people browsing through the website on their phones, or perhaps I didn't space it out enough ?
Title's a bit misleading and, the code is 15OFF75, for the £15 off £75. Effectively it's a 20% discount, so that's a pretty hot deal. Thanks Op heat added.