Lottie London - Everything £2!
Dont know if this has been shared but everything by lottie London is £2 at superdrug, I saw this instore also. I'm assuming they're discontinuing it or something. They have brush sets on the website but they seem to be out of stock!
It wouldn't let me post a link to everything so you'll have to search yourself and see everything that's available
Standard delivery is free for Health & Beautycard members when you spend £10 or more; or free for non-members when you spend £15 or more. All other orders £3.
Click and collect is also usually free. Read more about delivery here.