Take a look at the variety of business entities a company may utilize in the US by visiting the New York City government's business site http://www.nyc.gov/html/sbs/nycbiz/html/starting/business_legal_structure.shtml
Compare the legal structures listed by the New York City government with those discussed on the UK's Companies House website http://www.companieshouse.gov.uk/about/gbhtml/gbf1.shtml
