Dd is 14 and takes after me - exceptionally blessed with eyebrow growth!
She wants to get them shaped professionally and then I've show her how to pluck every other day to keep the shape and get stragglers.
I have been to Shavata Singh myself in Harvey Nichols (often touted as the best) and was spectacularly unimpressed by how quick and imprecise it was, and how brusque the woman.
Any recs for London for someone specific who will help dd? Don't mind paying a lot for a great service.