ss32, thank you for your kind and helpful comments. I have made some changes to the design - I have increased the line-height so that the text looks less "blocky", and have indented the contact information further to make it line up with the sub-navigation titles. I have also centre-aligned the page to make it look less "awkward", as you say.
I am waiting to find suitable images to add into the header to make it less text-based, but please note that your comment has been noticed and taken note of!
Oh, I have also removed my grades and employment as per your suggestion. I have now implemented the new design, but will still make changes should any of you have any more recommendations. Thank you for your helpful comments.
http://www.twixcoding.com