When do summer sales start?

[capet]

I know with ongoing promotions all the time they probably aren't a big deal but I saw a nice embellished jacket/top in monsoon the other day, don't normally go in there but don't want to pay £79 for it.
So does anyone know roughly when high st sales start, is it end of June?

I'm hoping soon! Sitting on my hands atm as I want a new bag and won't pay full price.

I know, I'm working on a little list of things to keep an eye out for in the sales. Dangerous stuff