Sequence of a police officer searching a man. The anonymous police officer pats down the anonymous man's trousers and shoes, and writes in their notepad. The police is wearing a bright yellow Metropolitan Police vest.

Birmingham, UK: Close shot of hands of scientist firing gun into special chamber for ballistics test at the National Ballistics Intelligence Service laboratory.

Door swings open toward camera into empty police cell in police station, room contains a bed and a toilet

Close shot of blue and white cordon tape with the words 'Police' on it, fluttering in wind against blurred background

Close up of mouth opening and DNA swab taken from inside the cheek with a cotton bud

Graphic patterns of a DNA sequence in blue and green dots as seen on a computer screen.

Close view of flashing blue light on top of police car

Various shots of Close Circuit Television (CCTV) cameras mounted on buildings.

View of empty police cell in police station, room contains a bed and toilet, cell door then slams shut

Laboratory technician in DNA laboratory wearing white protective clothing (lab coat) and purple gloves, working with criminal evidence using tweezers.

Policeman's hat on counter in police station with back view of male British police officer standing at desk in background

A Forensic Scientist wearing protective clothing examines evidence in laboratory looking through microscope, close shot of hands in purple gloves turning microscope knob

London, England: Night shot of police officers breaking down a door and entering the property during a police raid.

Close view of metal police cell door swinging open away from camera into empty corridor in police station

Back view of two British police officers walking along suburban street as traffic passes along road, policemen are wearing yellow reflective jackets and police hats