Yes, in some ways it is similar. You will be working on a specific research project for 3 years. However, the difference is in the amount and level of work involved. You will work full-time hours (probably much more than this, especially towards the end of your project) with limited holiday (approx. 20 days per year). PhD research can be extremely rewarding but be prepared for a lot of very hard work and some frustrating times! Good luck with your first degree :o)