How forensic spray is fighting domestic violence

Police in England are trialling forensic markings as part of the fight against domestic violence.

In January, the first person in the UK was convicted and jailed for harassment after being sprayed with smart water last month.

BBC Click's Shiona McCallum visited the Smart Water laboratory in Telford to find out how it works.

See more at Click's website and @BBCClick

18 February 2022