Australians Entering the UK

Hi everyone

Just wondering if those Australians who have been to the UK can help me. I just read on a website (i don't know how recent/old it is) that to enter the UK as a visitor you need documents such as:
- letter from employer saying they grant your leave, and when they expect you back etc.
- letter from your uni saying what your are studying and when they expect you back etc.
- bank statement

I did actually click on 'visitor'.... I thought all this stuff was only required if you were entering on a working visa. Did any of you guys have these forms, if not, was it a problem? Is it necessary to get all this stuff?

thanks heaps
Kathryn