Beautiful lined grey pinstripe wide legged trouser suit from late 90s/early Y2K Oasis. A wool/viscose mix suit with grey pinstripe and black metalised fibres. The trousers are wide legged with a turned up cuff. The trousers are in a 19404s/50s retro masculine style with one pocket at the back. Fastening is with zip, button and metal loops. The jacket is a 90s style, with a slight fitted, longer cut, single breasted with three pockets. It is fully lined with a silver coloured polyester/acetate mix lining. There are 3 buttons at the cuffs and a slit at the back of the jacket. 
Fabulous find, in excellent condition, unworn and with tags. Excellent condition other than the odd catch in the thread due to the nature of the material - but this does not affect the aesthetic of the suit in any significant way at all. 
I would describe the style as 90s does retro 40s/50s. The trousers are a stunning, flattering cut and the jacket is very 90s.
The size is a UK12.