Cheaper version of Crombie coats?

[Squirrelfruitandnutkin]

I want a detective coat, like Sherlock or cormoran strike. The one Holliday grainger has in that is lush.
Googling tells me it's a crombie coat, which is WAY out of budget.

Anyone spotted anything cheaper but similar - ideally tweedy blue or grey?

I’ve got a coat like this from Primark for £10! But loads of shops do them ! Topshop and jigsaw I’ve seen recently .