UNIQLO: Went to one in Knightsbridge and the two branches on Oxford Street. Jap Gap. Walls of TV screens, products on mannequins rotating in giant bell jar carousels, and a cool newspaper format magazine. Lots of white walls and white image backgrounds.
Spaceinvader: Not new, I know. First London ones appeared in 1999 according to their web site but I saw it and I still like it. Pixel, low-tech computer graphic trend.