ILL Manors, trailer analysis:

1. ) Film trailers provide a bunch of conventions, some of them are:

• Actor/director names - studio/production company(ies)
• Title + release date
• Narrative - disequilibrium (Todorov's theory)
• Action sequences/dramatic moments, montages etc
• Voiceover/text on screen/use bits of dialogue from the film
• Sounds - usually non-diegetic  
• Promotional information
• Review quotes, but sometimes no tagline 

1. ) Trailers are distributed by (usually) the same production companies that produced the film. The preliminary trailers are then refined by reviews from customers, before they go into actual stores. As a result, changes will obviously be taken as it is not expected to fully satisfy, so experimenting on a sample of real people will help them see whether they're going in the right direction or not.
2. ) The ILL Manors trailer has definitely used some of film trailer conventions. Particularly the review quotes. Review quotes have supported Ben Drew, "Plan B"'s first ever film, and given this, it obviously means he has no experience or history in the film industry, so we would automatically presume it be not very good at all, however review quotes try to avoid that thought. The film trailer has also given significant dialogues from the film in order to tell a narrative in short span of time, and this would be particularly useful as the plot does tend to have a lot of things happening, different situations.
3. ) The target audience would most likely be by default Plan B's music audience, but apart from that would be people in groups that are interested in the movie itself, or just want to analyse the agriculture of young, British teenage gangsters. Plan B's editing of Ill Manors also sort of suggests a linear narrative, there are all sorts of things affiliated with gang violence.
4. ) The genre has been clarified almost clearly, you cannot miss it. Things such as places that we associate with poverty, example, street corners, rooftops, etc are all that support it. The character clothing/mis-en-scene and props also emphasize this more. Every character wears some sort of tracksuit, snapbacks etc or similar to that, connoting a criminal. It is supportive of their nature as it conceals their identity, maybe for each of their obvious reasons, e.g. criminal behaviour/activity with drugs, violence etc. Lighting wise, most of the film (about 80%) is filmed during the night, and significantly this is the period of the day when the criminal activity takes place. Even the trailer itself glimpses at only night time scenes.