ataraxis here are a few, if you can narrow it down to some things that you like then that will give me an idea of your style/thinking
phase eight good for dresses/smarter outfits and occassion stuff
oasis smart casual stuff great and good sizing/finishes
warehouse good basics and tailoring
fcuk bit pricey at times but good for one piece e.g. top which can be put with jeans etc for night out
now for basics/classics GAP, NEXT and M&S can't be beaten
if you can be bothered going into Debenhams they normally have a COAST outlet which is fab and for some smarter gear without going 'worky' I'd head to Wallis or Principles
wallis and principles
a bit different/patterned or quirky I'd be going to H&M, New Look or Primark
now does any of that help at all or is it too vague?