Here are some links that Amanda Clare have found which still have placements. Below these links there are a few e-mail contacts you could also try as they have taken IY students before.
https://targetjobs.co.uk
http://www.ncub.co.uk/students/placement-search.html
http://www.gradcracker.com/computing-technology-work-placements-internships/
http://jobs.trovit.co.uk/
http://www.studentladder.co.uk/Engineering/Science/technology-industrial-placements.htmlhttp://www.sorensonmedia.com/company/contact/ they have taken students before.
http://www.cat.org.uk/index.html – they were looking for a web developer recently.
Also you could try e-mailing:
Atebol (byron@atebol.com
Amadeus – (kristian.schuhmacher@de.amadeus.com) they might still be looking for placement students.
Method4 in Cardiff, neil.huggins@method4.co.uk
Also check out the past job ads on the Aber Comp Sci jobs facebook page with various companies to browse through: https://www.facebook.com/groups/1633624650235803/