Hmm I don't shop v much now as I used to when working in a city job, be a little relaxed about NAP, outnet, mywardrobe, etc etc
I left said job.. but still need smart work clothes and casual clothes...now I probably always look semi smart unless wearing PJs. I like to feel ready to have to go in to work and be smart casual and on duty , I feel utterly drab and weird if I wear v casual clothes. I religiously stick to things I know I like and because I am lazy and very short of time I have been known to buy the same thing in couple of colours, or more than once, to save any shopping efforts!
casually I guess recently I've been wearing black dark grey or dark red skinny jeans with ballet flats or ankle boots, a slightly long top layered or a really nice sweater. Lots of navy, grey and teal things too. Decent coat though this year my winter coat was a £25 zara sale coat, really comfortable shoes are important I like my various Hudson boots and proper fitting shoes.
I also wear lots of dresses because they're easier to dress up/down and I feel less fusty in them is that a word - so I like black jersey dresses, dark grey.. I went through a printed dress or skirt phase too.. above knee length but not too short. Ponte is amazing for flattering you. So are body shaping opaque tights.
I like long jumpers. and scarves. I got very excited this week by a fancy cycling jacket 
In summer I mainly wear skirt + a plain top all very non specific in how smart they are eg a black and blue printed skirt with a black silk vest and maybe a soft floppy blazer if it's cold.. or ankleish length navy or black slim leg trousers with a nice jumper or silk top and more colourful shoes. I guess classic suits me better than anything else and I feel less out of place than in for example my graphic tees or hoodies or my old vintage clothes which I feel require more effort or youth or something
Places I shop if I ever get around to it - J crew, occasionally anthropologie, cos sweaters, comptoir des cotonniers, whistles, twenty8twelve outlet store, bloch, New look for thin t shirts. Some particularly boring things from banana republic or Massimo dutti. occasional casual things somewhere like vero moda or oliver bonas perhaps, or kate kuba for some jersey tops