Boots currently have Bourjois makeup products on a 3 for 2 off.
You also get a free Bourjois Contour Edition Lip Liner worth £4.99 when buying 3 Bourjois products.
The colour you get free is Nudewave, I've found before though that if you do click and collect, most stores are happy to exchange a products for a different colour of the same product. This lip liner comes in 6 other shades so could be worth asking when you pick up your parcel.
There are a few selected Bourjois products that get you a free sample of Guerlain Sophistick which is automatically added to your basket. It is a bit of trial and error but here are some of the qualifying products:
nail polish remover
flower perfection primer
Happy Light Serum Primer
Volume 1 seconde mascara
bronzer and highlighter compact
Glamour push up mascara
That's 4 Bourjois products for the price of 2 plus a free sample. You can get free click and collect to store!