@Relaxed and @MarkMayo - Thanks for the advice guys. I have been reading up about it all but thought that I would drop the question in here seen as all of you people enjoy travelling a lot! :) I plan on popping into the TMB on Saturday to discuss it all with a professional but I am extremely happy to have read through the CDC page on Sri Lanka as the Hepatitis B does seem to be unnecessary for my travel requirements.
I am 26 and unsure about the vaccinations I have received from school but I believe that it was the measles mumps shots and influenza?