Illamasqua is having an Easter Sale this weekend! You can get 20% off, and receive a free (non-animal hair) eye liner brush with a 100 British pound purchase. The code to use at checkout is EASTER20
You don't need to spend over 100 pounds to receive the discount, but you do need to be over 100 (after discount!) to get the free liner brush. I've heard good things about their brushes so this seems like a good way to try them!
The offer ends 9am Tuesday morning so you need to make you decisions before then! Happy Easter :D