Rosie you have just made me remember I need a navy knit. Now I am in my forties I cannot wear black near my face without major scarf accessorising. Keep popping in to TKMaxx if you are near one and can stand the hassle - there will be cashmere aplenty in the coming weeks (hopefully).
I like John Smedley and have a couple of men's sweaters which are lovely and slouchy although I think mine are a cashmere and silk mix 70/30 If I remember. Mine are about 5 years old and still look good but I've been v careful with them. I am veering back towards merino wool as it is less high maintenance and still looks good. Baukjen do lovely slouchy sweaters and I am sure their AW collection will have some goodies. N Peal is a lovely cashmere brand. What colours are you thinking of?