We have written to our investors to provide information on the new Key Investor Information Document (‘KIID’). The KIID is a pre-contractual information document which will replace the Simplified Prospectus and must be in place by 1 July 2012. We will replace the Simplified Prospectus for Henderson funds on 18 June 2012. This communication is relevant to existing investors in the Henderson UCITS product range, which includes all UCITS sub-funds under the Henderson Horizon Fund and Henderson Gartmore Fund SICAV umbrella. Please sign and return the completed declaration to the following: Henderson Horizon Fund, 33, rue de Gasperich, L-5826 Hesperange, Grand Duchy of Luxembourg (or by fax to +352 2696 9748) or Henderson Gartmore Fund, 14, Porte de France, L- 4360 Esch-sur-Alzette, Grand Duchy of Luxembourg (or by fax to +352 2460 9500).