First I have to admit that one reason that made this film more appealing for me was that at the moment I live in Glasgow, right in the area, where the film was filmed and here the "neds" are a part of daily life, only in different uniforms that in 70's. So to say, if living elsewhere I would not find this film as interesting as now. How ever it is still quite good movie.
Some say that the language is difficult. Probably yes, if you are not glaswegian. Though even I understood almost everything with a background of three years in Glasgow (English is not my native language).
Surprisingly there were even a few moments when everybody laughed (I was not expecting comedy), but still it was not awkward. Few shocking moments, but no unnecessary gore. Though it might have been good to show little bit more the gruesome results of stabbings as it feels here, and in that movie too that sadly many of these young "neds" do not even realise the fact that knife can kill and is not a toy.
The characters are a little bit hollow. In Neds everything just is how it is, some further explanation and reasons would be really fruitful. I would have appreciated some deeper view of the main characters thoughts and reasons for his actions. I was looking for some explanation to the whole ned-culture, gang fights and meaningless violence. From this movie I learnt only that things were the same in Glasgow 40 years ago.