Love The White Company, Mint Velvet & Jigsaw...but only ever buy in the sale. I cannot justify £49 on a Jigsaw t-shirt when I know it will come down to £25 in the sales. Same with The White Company...just bought a gorgeous, cross-over back, sweater in merino wool for just £47.50 (normal price £110).
Still manage to get the occasional good item from M&S Collection or Autograph.
For more everyday stuff, I started shopping in H&M only because my DDs dragged me in there, for them...but I now buy nearly as much for me, as for them. You can't beat their plain, v-neck loose sweaters at only £19.99 (think I have them in 5 colours). Same with New Look...I wouldn't have dreamed of shopping in there until my DDs started getting into fashion. But, they do some great, plain sweaters, and excellent shoes, and pretty decent quality for the price.
I swear by TK Maxx too - from there I have recently bought a beautiful French Connection, grey bat-wing sweater for only £24.99- RRP £70.00). You can also get good label cashmere in there, and I love it when I bag anything by Calvin Klein.
I avoid Next like the plague nowadays...cheap, cheap, nasty, cheap, polyester, cheap, polyester, cheap...etc.
I quite like White Stuff - but if I'm not careful it can make me look mummsy and frumpy. I don't really do pattern or colours, you see.
I find Joules and Seasalt a bit twee and decidedly frumpy-looking. I always equate women who wear Joules/Seasalt as the sort of women who apologise after having an orgasm 
I want to dare to shop in All Saints, but think I'm too 'busty' to wear their stuff? Also think I'd need to drop 7-10lbs too.