You have to consider what your heading hierarchy will look like:
If you chose to use a h2 for both:
- Web site title
- Postgraduate information evening
- Study
Or if you chose not to
Then you have to think about some questions:
- Are "Postgraduate... " and "Study" the same level of information?
- Does navigating thru the heading hierarchy give coherent user experience?
I would say that if you consider that "Postgraduate information evening" is the information that they would seek when they land on this page, then you can give it a h2 to improve user navigation. But if it's just an article promoted inside the "Study" hierarchy, it doesn't have to be as it does not improve user experience.
My opinion is : if the text links to another page, then it doesn't have to be in the heading hierarchy.