cut off - next Tues is not?1 Sep 2014 18:45
Might be reading it incorrectly but from the FTSE website as below it looks like cut off date is next Tueday which is more than 20 trading days.
The FTSE Europe/Middle East/Africa Regional Committee will meet quarterly to review the constituents of the FTSE 100. The meetings to review the constituents will be held on the Wednesday after the first Friday in March, June, September and December. Any constituent changes will be implemented on the next trading day following the expiry of the LIFFE futures and options contracts, which normally takes place on the third Friday of the same month.
Market capitalisation rankings are calculated using data as at the close of business on the day before the review.
Companies must have a minimum trading record of 20 days at the review.