A big welcome to my new followers, thank you all! :-)
I'm big on online shopping and thought I would share some of the sites I have shopped at and had very good experiences with and some of which I found out by other people sharing on YT:-
http://www.love-makeup.co.uk/ (limited edition Mac stuff & lots of other brands inc. US ones)
http://www.cocktailcosmetics.co.uk/ (as above)
http://www.geniecosmetics.co.uk/ (have picked up a few Mac blushes and Mac eyeshadow refills, they have other brands too), used to be A1 Cosmetics.
http://www.justbeautydirect.co.uk/ (amazing smashbox prices & other brands)
The 3 sites below have various brands for makeup, skincare and perfume;
The 2 sites below are pro make-up stores, I haven't actually ordered from these stores but they come highly recommended (see below), they stock Make Up For Ever, pro make-up brands and any items they don't have they can order for you I believe, like MUFE brushes but best to check that with them.
http://www.gurumakeupemporium.com/ (recommended by pixiwoo I haven't ordered from them)
http://www.makeup-provisions.com/ (recommended by gossmakeupartist)
John Lewis (Bobbi Brown, Nars, Laura Merier etc)
Debenhams (sells Illamasqua and the usual brands and they frequently have sales)
http://www.spacenk.co.uk/ (have Nars, Laura Mercier, lot of brands for makeup, hair, skin care & perfumes. To be honest I have only purchased instore but they are one of the few to stock Nars as well as other brands online so thought it deserved a mention).
Well I hope I may have introduced you to a site or two that you've not heard of or tried before.
I would love to hear about sites you have used and would feel happy to recommend.