If you're caught working without the correct visa, you'll likely be removed from the country and you could barred from re-entering the UK for up to 10 years.
If you fail to get the correct paperwork, you are breaking the law and you should expect consequences if you're caught.
I also feel as though I occasionally get mistaken for a tourist when out in Central London.
If you think you need a visa, please read the following section.
However, if you're looking for a place to start, I've included a general description of the types of properties you'll find in a few postcodes to help you begin your search.
Postcodes are a common way to identify roughly where you live and they correspond very loosely with compass points from the City of London.
UK website will tell you in plain English what type of visa you'll need and the requirements that go along with it.
While Americans, Canadians, Australians, New Zealanders and nationals from certain other countries can usually enter the UK visa-free as tourists, this does not give you the right to work.