The Duchess of Cornwall applied a traceable liquid called SmartWater to the Royal Artillery Memorial at Hyde Park Corner. The liquid is used to identify memorial plaques that have been stolen.
The Duchess of Cornwall has been meeting representatives of the Trust in Memoriam 2014 campaign at the Royal Artillery Memorial on Hyde Park Corner.
She is highlighting work done by the trust to reduce war memorial theft.
Memorial theft has been on the increase over the last couple of years as scrap metal goes up in value. The trust is trying to reduce these thefts by marking memorials with SmartWater, a liquid which leaves a traceable forensic signature.