Ask any private investigator what their most important piece of equipment is and they’ll probably tell you it’s their brain. They’re a funny bunch you see, and while they need a keen instinct for dodgy behaviour, they’re nothing without the standard tools of the trade. The role of a private investigator is quite varied and as such, you’ll need an array of different equipment to ensure the results of your hard work are recorded correctly. One day you could be waiting for an insurance fraudster to appear from their home without any signs of the injury they’re claiming for, the next day you might be recording a corrupt business person explaining their next dodgy deal. You’ll need different tools for these very different jobs.

Car or scooter

Not specifically specialist equipment, but you’ll certainly needs a means of getting about. In big cities a scooter or small motorcycle might be your best choice, although a stakeout in the rain may be better performed in a warm car. Either way, you’ll want something inconspicuous, cheap to run and relatively quick.

Sat nav

While you’ll spend a lot of time trailing targets, in a lot of cases you’ll have addresses of workplaces and associates of your target. The last thing you want to be is late to a sting so use sat nav to get there quickly while avoiding traffic.

Maps

It might sound very basic and a little old fashion to be carrying a map but you can’t know every single place in the UK and sometimes you can be sent to some obscure places. Maps are great because they never run out of battery or loose signal. Keep a UK road map in your boot or bag for emergencies.

Cameras

Hidden cameras are essential for collecting evidence without tipping off or alerting the subject. David Munslow is a private detective from Nottingham. He regularly uses a hidden cameras to gather evidence of cheating spouses meeting up with people they shouldn’t or insurance fraudsters working when they’re claiming to be injured. His method of concealment is a bag, from which the lense of his spy camera protrudes almost invisibly. Nobody bats an eyelid when David puts his hidden bag camera down. For long distance work, he uses a long lens, light weight video camera. This enables him to hold it for long periods of time without getting tired while remaining at the ready to get that all important snap of evidence. David told the Nottingham Evening Post, of his time watching an insurance fraudster;

"I was just watching. It's difficult to get across to people the concept, we sit still, watching the door, concentrating for two hours. I can't read or do the crossword because when the door opens I need to have the video camera ready in seconds. "If they drop something and bend down to pick it up without thinking then that footage may have real relevance."

Top tip; always carry back-up batteries.

Listening devices

Listening devices, especially those that enable you to listen through walls, can help with an investigation, but they’re mainly used for longer scale, high risk operations where it’s dangerous to get too close to a subject. For example, government agencies and large firms may use long distance listening devices to gather evidence.

Audio and voice recording devices

Discreet and disguised recording devices are essential for private investigators. It’s all very well putting someone in a certain place at a certain time with a photograph, but often that’s not enough to prove anything. Discreet audio and voice recorders, such as those disguised as everyday items like calculators or smart phones, are essential. A number of high profile busts, from the Fake Sheikh scandal and the recent Cash for Questions scandal, couldn’t have been done without high quality audio recording.

GPS car trackers

If it’s too risky to track a target in person, you can use a GPS car tracking device to gather data on the routes that they’ve taken in their car. This can often be enough to proove to a suspicious boss or spouse that a person has been somewhere they shouldn’t. A great way to collect solid evidence without putting yourself at risk.