I am not an advertiser but a Mum who spends forever looking for cotton trousers for my dcs - apart from the schooluniformshop I have also found lint kids which look fantastic and are the only ones doing multiple colours in boys and girls. I am ordering some pairs and will report back on the quality ...
Please can others post any other links so we can build up a good resource.
Now all I have to do is persuade the school to offer a cotton alternative to their 100% polyester, double thickness, short sleeved sports shirts with 100% polyester 'hoodie' over the top!!!