I am from Australia I just returned back here two months ago, You can enter London as a Australian tourist for six months without a visa, Italy and France Australians can enter no visa is required also but you can only stay as a tourist for three months without a visa, if your three months runs out you can go to the local police and inquire in further stay including a visa:). I entered Italy and London without, Though customs may ask your purpose of stay and if you have enough funds to support your stay and where you will stay and how long for. Once you enter you can pretty much catch the Euro train to a lot of euro countries.