I just picked up a pair of black wide-leg tailored trousers with a side sequin stripe from Sainsburys. Wasn't expecting much as I ordered them online, so couldn't really look at them properly and they were half price in the sale. I paid £12.50 for them, but they are absolutely lovely. Really nice fabric and they fit beautifully - better than the M & S ones.
I intend to wear them with a lovely plum coloured Reiss fine knit jumper and kitten heels.
I love a bargain, so would love to hear about yours!