It is important to read the second notice contained in the attachment.

In a nutshell, to save yourself some trouble and to buy yourself some time, make sure that your 2016 seaworthy ticket/CoF is issued BEFORE 1st January 2016.

Effectively this will mean that you will NOT be required to have a VHF DSC radio fitted for seaworthy purposes, only your current 29Mhz, – until the following 2017 boat inspection, and between now and then who knows what will happen?