On larger or part-time courses it's often not clear at first who your Course Reps is, but your Scheme Leader will know, and most Course Reps are happy to be contacted by email, so ask your Scheme Leader and they should be able to tell you who your Course Rep is, and how to contact them.
If your Scheme Leader isn't able to tell you who your Course Rep is, email rthomas5@glam.ac.uk and the Course Reps Coordinator will be able to tell you. It might be that your course doesn't have a Course Rep yet, so you could consider standing. Have a look at these pages, or email rthomas5@glam.ac.uk.
Some Course Reps have online blogs to keep students up to date with various news and information, so ask your Course Rep if he / she has one.