I know there was a thread berating White Stuff the other day but I was passing their shop and saw this promotion, I dodged some of the horrors in there but found the boots listed in the link below - perfect heel height and more black than charcoal grey. they also have great reviews online
20% off all items instore and online until midnight this Saturday.
www.whitestuff.com/womens/shoes-boots/grey-sadie-mid-ruched-boot/