Well I happen to know that as a whole, UK is sold heart and soul into the Microsoft world. Many of their sites and services do in fact function fine on Linux, but certainly not all.
They use Cisco for VPNs, so should you be in a situation for VPN usage, support on Linux is just fine for that.
Wireless doesn't do anything special, so it's fine too on Linux. I've tested it thoroughly. They do like to use odd key indexes on some of their secured APs, so make sure you know how to change your key index.
Many of their internal sites are Sharepoint and _should_ work just fine with Firefox on Linux, but not guaranteed.
Office 2007 is pretty much their standard, so you may find many documents you have to download for class could be in Microsoft's own XML flavor. Being that I'm not a student, I don't know if this is an issue or not.
Other than that, I have had success authenticating to their AD domain on Ubuntu. As a fun side note, they gave their domain the super original name of AD.