Biochemistry with forensic science courses?

I haven't heard of any such courses, but I would have thought that there would be some similarities between the two subjects and so it should theoretically be possible to create a course combining them fairly easily - but from a university's point of view they need to ensure there is enough demand for the course before spending their time and money creating it, which may be your problem. Forensic Science is a very new and rapidly developing area, and as it is very specialist it wouldn't surprise me if many students potentially interested in it would be cautious due to uncertain job prospects and restricted graduate options - and would instead opt for more mainstream Biology or Biochemistry degrees.
Going to university abroad is probably complicating your search as well - perhaps consider going to a UK university with a study abroad year? Bear in mind that the forensic science part of the degree may need to be accredited and so you may struggle to find a course abroad which would allow you to work easily within the field in the UK once you graduate. Think about what you really want to get out of your university experience - you will probably find that what you hoped to get out of studying abroad you could also get from travelling/ working abroad during university holidays or by doing exchange programmes. Finding universities abroad with funding for international students is also a huge challenge...