A couple of things to bear in mind:
- The first year of a degree is generally designed to bring everyone up to the same level. Some will find it easy because it can occasionally rehash A Level content, to make sure that the entire cohort has the right grounding in the basics. Just because somebody finds the first year easy, it doesn't follow that they're going to be able to sleepwalk through the second and third years. If you don't get into good study habits in the first year, the second year can be a shock.
- Coasting through the first year because it doesn't count towards your final degree classification, is a mistake. Employers (or other unis if you go on to postgrad) will ask to see your full transcript. This will show all module marks for all three years. It can provide documentary proof that you're the sort of person who only works hard when it suits them. In addition, staff at your current uni will be writing your job/postgrad references. If you're the sort of person who only works hard when it suits them, they might decide to mention that in your reference. If you make a really bad impression, they can refuse to give you a reference at all.