Do they exist anymore? It's been a while since I've bought something expensive but I noticed there is no VIP code on my recent order.
I heard a while back on the forums that LH had stopped doing them, yeah. You'll have to ask some of the forum members who have been here longer though for confirmation.
I never used one myself as I only joined last February. Wow! ONLY last Feb! That's nearly a year!! 
Yeah there was a post a while back now saying they had stopped doing the VIP code to focus on other better offers
Edit: Here you go, first thread on the search... http://www.lovehoney.co.uk/community/forums/inside-lovehoney/517938-vip-code-missing/