When an expert witness can change a life: how one slang-word saved a teenager

Last night we received a message that reminded us why our work matters so deeply:

“Hi Ian, I’m delighted to share that it went really well — we got a successful result! I can’t thank you enough for your work; it was absolutely crucial and so well done. I truly appreciate the care and professionalism you put into the report — it made a real difference…. The barrister said your report was excellent.”

This came from a father whose 16-year-old son faced a criminal trial for allowing themselves to be carried in a stolen car. The Crown’s case depended on text messages: the driver had written that he was trying to get a “dinga” before meeting the boy. The police’s expert claimed “dinga” was common slang for a stolen car. The boy insisted it meant a cheap, old car—not necessarily stolen. The father was conflicted because to him it meant a stolen car, but his son was insistent.

In desperation, the father called us at short notice to ask our advice. Within a week, we had liaised with the boy’s solicitor, accepted the instruction, reviewed all the material, and mobilised our resident expert in Urban Street Gangs and UK Slang, Mr Dec James.

Within days, Dec had produced a fully court-compliant expert witness report that had undergone our robust quality assurance process and was submitted to the solicitor.

Our report explained:

• Slang evolves over time and across generations

• While “dinga” or “dinger” once did carry the sole meaning of “stolen car,” today it is also widely used to refer to old, cheap, runaround cars  

• We provided real-life examples and contextual evidence supporting his opinion

• We flagged the possibility that the Crown’s interpretation was too narrow

Then, just before trial, after receiving Dec’s report, the Crown’s expert conceded that “dinga” can indeed mean an old, cheap car—not necessarily stolen.

Watching that concession come through was vindication.

Yesterday evening, the father’s message confirmed what we had hoped. The barrister praised our report as “excellent.” The outcome: justice served.

Why this case matters — and why your choice of expert witness is so important

That father’s relief must have been immense. Imagine the fear, uncertainty, and weight of possible lifelong consequences for a teenager. The decision to instruct us made all the difference. Because of it:

• The boy can continue his studies without the stigma or damage of a criminal record

• The family can recover their peace of mind

• The Court was better equipped to assess the evidence fairly and justly

From this case, here are three lessons:

1. Never assume the Crown’s expert is infallible. Credible, highly experienced experts are essential—for both prosecution and defence—from the earliest stages. Had the Crown’s expert conducted broader research, we may never have needed to intervene.

2. Language changes. Slang, especially, shifts meaning over time. Experts must stay current and must explore alternative meanings when new submissions are made.

3. Expert evidence is too important to get wrong. In this case, our careful work meant the difference between a life-altering conviction and a fair outcome.

   
   

If you ever face a case where meaning, context, or interpretation matters—especially in communications, slang, or colloquialism—ring us before the window closes. We turn jobs around fast. We maintain rigorous standards. And we do so because lives depend on it.

Let’s talk.