stansgran I would think that if you bought the flat black shoes last August they must surely be too small now, so I agree with you. Although £100 isn't a huge amount to spend for a good pair of shoes, the children shouldn't be wearing shoes that are too small.
I always thought that trainers weren't that good for the feet either but a lot of the children seem to wear them all day. When I was a child, I had winter shoes and summer sandals from Clarks. As I got older, I didn't always appreciate having to wear "sensible" shoes for school but I'm glad of it now as my feet are reasonably OK (touch wood).
I even see some children wearing wellington boots in this hot weather. Again, I thought that wellington boots were bad for the feet as they offer little support and make the feet and legs sweaty. Obviously, they're useful and fun in wet weather but its seems odd to me that children wear them all day long.
Having said all that, my daughter says that I wasn't a very tactile mum and, although she was always well looked after, I wasn't very demonstrative or tactile and she missed out on cuddles. I thought I was being a "good" mum, so perhaps there are more important things than shoes and clothes.