2QUESTION 2 OF 3
Answer & explanation
The official answer, with Fermi’s reasoning step by step.
Answer & explanation
Official answer
43,300
instructors
How to estimate it
Fermi’s official “Napkin math”
The easiest place to start is Great Britain's population, about 65 million. How many instructors does a town keep busy? A town of 10,000 might have five, which is one for every 2,000 people.
- Great Britain population
- 65,000,000
- One instructor per 2,000 people
- ÷ 2,000
- 65M ÷ 2,000
- ≈ 32,500
Rounded assumptions may give a slightly different estimate. The official answer above is the game’s reference value.
Source calculation & reference
- Approved driving instructors on the DVSA register, Great Britain, Sep 2025
- = 43,334
- Same register a year earlier, Sep 2024
- 41,453
- Fully qualified instructors, Sep 2025
- ≈ 43,300
Reference cited by Fermi: DVSA register figures in a Lords written answer: 43,334 in Great Britain, Sep 2025
How close was your guess?
Your comparison will appear here.
Compare by ratio: divide the larger number by the smaller one. The closer to 1×, the better.