English Heritage have launched a fund-raising appeal to help conserve the many guns and artillery at English Heritage sites, particularly those sites on or near the coast. The link below is to their web-site page describing the situation and asking for donations.
http://www.english-heritage.org.uk/support-us/our-appeals/save-our-cannons/
At the recent Ordnance Society board meeting it was agreed that the Ordnance Society would contribute £100 to the fund.
If you would also like to contribute the details are on the web-page above.