Subject to the court sanctioning the scheme of arrangement in relation to the acquisition of Clipper Windpower PLC (UK) by United Technologies Corporation (Non-Constituent), FTSE announces the following changes:

INDEX
CHANGE
EFFECTIVE FROM
START OF TRADING

FTSE AIM 100
Clipper Windpower (UK B09H7Z5) will be deleted.

Metminco (UK B61HMS3) will be added to the index with a shares in issue total of 835,258,549 and an investability weighting of 100%.
15 December 2010

FTSE AIM All-Share
Clipper Windpower will be deleted.
15 December 2010

Please note: Last day of trading for Clipper Windpower is expected to be Monday 13 December 2010, therefore it will remain in the index on Tuesday 14 December 2010 based on its last trade price.