Really? Is there anything similar in the UK? I don't believe there is - but I generally tend to believe there is less red tape around entrepreneurial activities in the US than the UK (we run businesses in both places).
High Net Worth Investors
have an income in excess of GBP 100,000 per annum and/or have net assets (excluding primary residence) in excess of GBP 250,000 Sophisticated Investors
have made at least 2 investments in an unlisted company in the last 2 years have worked in the private equity sector or in the provision of finance for SMEs or have been in the last 2 years a director of a company with a turnover of at least GBP 1 million have been a member of an angel network or syndicate for the last 6 months