Hy Dmitriy!
I don't know whether you are still searching, but I would like to study cinematography in UK too and I found Bournemouth University (MA Cinematography for film and television) and Edinburgh Napier University (MA Film with cinematogaphy path). I don't know how these Masters are but I think that are the cheapiest, especially the Napier one (3750£).
Does anyone know or attended these course?
Let us know.