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ARTICLE · 02 SEPTEMBER 2026

Lower Free Float, Wider Access: A Change To FTSE UK Index Series Eligibility

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FTSE Russell has lowered the minimum free float requirement for non-UK incorporated companies seeking inclusion in the FTSE UK Index Series from 25% to 10%, aligning it with the requirement for UK incorporated companies. This change makes UK listing more attractive for companies with concentrated ownership structures and could broaden their access to index-tracking funds and institutional investors.

United KingdomFinance and Banking
Kate Ball-Dodd
Kate Ball-Dodd
Rebecca Bothamley
Rebecca Bothamley
Harriet Hainsworth
Harriet Hainsworth
Tara Hogg
Tara Hogg
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On 22 June 2026, FTSE Russell lowered the minimum free float requirement that it applies when assessing whether a non-UK incorporated listed company is eligible for inclusion in the FTSE UK Index Series. Such a company must now have a minimum free float of 10%.

As September’s review of the FTSE UK Index Series approaches, we consider how index inclusion could now be within reach for more listed companies, strengthening the case for choosing the United Kingdom as a listing venue.

What is the Free Float Requirement?

A company may be included in the FTSE UK Index Series if:

  • it is admitted to the equity shares (commercial companies) listing category or the closed-ended investment fund category of the Main Market of the London Stock Exchange; and

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