Attack The Block

Attack The Block was produced by a company called Big Talk Productions. BTP also produced films such as Shaun of the Dead and Hot fuzz. They also produced along side Film4, The UK Film Council and StudioCanal. Overall the film was shot across many different estates around London, as Joe Cornish the producer explains in a quote. But They used an opening scene shot of a birds-eye view of an estate to use as the map for the film. interior shots were filmed in a studio. 

Attack The Block was based upon Joe Cornish, coming into contact with a very realistic gang himself. Due to being previously mugged, Cornish decided to investigate into large gangs and estates around London, and this influenced and inspired him into making the film.

Cornish went on to say in an interview that he thought "In the UK there are a lot of hood movies. They're usually quite depressing." Joe claimed that he wrote from his instinct and wrote what he thought about were his genuine ideas.
The soundtrack in attack The Block was composed by Simon Ratcliffe and Felix Buxton from the Basement Jaxx and also Steven Price. They did actually use a song or two that was a Basement Jaxx song. So they brought their own work into the film.With money saving problems, driectors only used CG effects when necessary, and had an extreme budget on how they did their special effects with the aliens, using puppets and even people in alien costumes.
Problems Whilst making attack the block, they didn't have the correct budget to have 3D animated aliens so had to improvise.