If the EVA film is for encapsulating solar cells then make sure you only use film designed for the purpose, particularly in their resistance to UV - there were a lot of problems in the early years of solar panels with the encapsulation discolouring (going brown) after exposure to strong sunlight and temperatures. Might not be so much of a problem in the UK's cloudy, lukewarm summers though! The link supplied by supremetwo didn't say anything about UV so I'd be careful. PVB films (polyvinyl butyral), used in laminated glass, are also used in solar panels.
DuPont naturally make some high grade products: http://www2.dupont.com/Photovoltaics/en_US/products_services/encapsulant/elvax_eva_resins.html
If you buy cheap Chinese film via Ebay with no specifications then its caveat emptor
Of course if you want something to wrap your sandwiches in then there are other things to worry about ...