From the CWGC website.
Major renovation works at Chatham Naval Memorial
17 October 2012
A two-year renovation programme is under way at Chatham Naval Memorial, Kent.
The first phase of work, which will be completed by Christmas, involves a full cleaning of external walls and shelters, re-pointing of stone work, the removal of blue stains under panels and other minor repairs.
The work will cost nearly a quarter of a million pounds and follows a general inspection in 2011. It is partly being carried out in response to frequent vandalism at the site.
As recently as June, the copper roof was stolen from one of the memorial's shelter buildings, costing £10, 000 to replace.
Security cameras have now been installed. The memorial is also regularly patrolled and access to the public has been restricted to between the hours of 08.30 and 17.00, to minimise damage.
It is hoped that the work will have minimal impact on public access to the memorial.
A similar renovation project will also be carried out at Plymouth Naval Memorial.