Enterprise Investment Schemes (EIS) are designed to help small companies raise finance by offering tax breaks to investors who purchase new shares in those companies. The maximum investment contribution is £2m. As a result, you can receive 30% income tax relief which can be offset against your earned income for the tax year. EIS shares must be held for 3 years otherwise the income tax relief will be withdrawn. Both of these encourage investment into smaller UK companies by offering tax relief, as you are a higher rate tax payer it may be worth exploring these in more detail.