I have some wool trousers from their winter sale. Lovely quality, on the big side but I wanted slouchy. Good price in the sale too. I ordered several pieces but only kept the trousers. All good quality, but some didn't suit.
If you mean the Atterley own brand, I've never bought any.I can't be bothered with the new website, there are no search or filter functions, its design led, which doesn't say great things about them to be honest.
Also when it was Atterley Road the customer service was appalling.
There do have quite a few bloggers on the payroll though who claim to love it.
I bought some stuff recently in the sale - quality good for the price, sizing on the slightly larger side. I ended up sending back - returns seem quite slow in my recent experience but they do send out an email to tell you they have received your returns.
I would say worth giving something a go if you like it.