Only Premium Listed Equity Shares with a listing on the London Stock Exchange are eligible for inclusion in the FTSE UK Index Series. Where a company has two or more classes of equity, a secondary line will be eligible for index inclusion if its full market capitalisation, i.e. before the application of any investability weightings, is greater than 25% of the full market capitalisation of the company’s principal line and the secondary line is eligible, in its own right, under Section 4 of the FTSE UK Index Series ground rules. Should the full market capitalisation of a secondary line, which is already a constituent of the FTSE All-Share Index or the FTSE Fledgling Index, fall below 20% of the full market capitalisation of the company’s principal line at an annual review, the secondary line will be deleted from the relevant index unless its full market capitalisation remains above the qualification level for continued inclusion as a constituent of the FTSE All-Share Index at that review.
Where a company's shares are issued partly, or nil, paid and the call dates are already determined and known, the market price will, for the purposes of calculating its market capitalisation, be adjusted so as to include all such calls (i.e. the fully paid price).
Convertible preference shares and loan stocks will be excluded until converted.
The FTSE Regional Committees must be satisfied that an accurate and reliable price for the purposes of determining the market value of a company exists.