I haven't found the knitwear to be great (it bobbles and looks shabby quite quickly) but I like the jersey tops and dresses, and all the kids stuff is good quality. There is always a discount code and good sales as Remus and MmeCholet say.
I am just about to throw out a White Company duvet cover we have had for 16 years! Superlative quality. There is a White Company outlet shop in the Gloucester Docks - I got a really nice jersey dress there for £9 marked as "returned because creased" Many bargains to be had.
I really like the dresses for work as they are a decent length and don't reveal too much flesh - I don't mind paying full price. they do look a bit blah on the hanger but they are cut really well IMO. And I'm another fan of the vanity sizing in there.