Gallery: Tools for CSI cybercrime

One of the biggest challenges faced by the unit is the sheer size and scale of the fast evolving mobile phone market.

New forensic tools are constantly being devised to detect emerging devices and the team must carry around scores of connectors for nearly every mobile phone produced, a small selection of which are seen here.

Keith Foggon, head of the DFU has overseen a revamp of the unit earlier in the summer.

He said: "The PC architecture it is usually stable. But with mobile devices they change daily and consumers buy, throw away and upgrade their mobile phones, with new models coming out very, very regularly.

"That is an area where we are almost playing catch-up, we are never ahead of the mobile device forensic market."

Photo credit: Nick Heath