Sounds like London.
That was my first thought!
Then, I got to thinking how many we have here. So I looked up how many CCTV cameras per capita, and we’re worse than the UK:
“The United States has 15.28 CCTV cameras every 100 individuals, followed by China with 14.36 and the United Kingdom with 7.5. Other top 10 countries include Germany with 6.27 cameras per 100 individuals, Netherlands 5.8, Australia 4, Japan 2.72, France 2.46 and South Korea 1.99.”
Link: https://aithority.com/news/top-10-countries-and-cities-by-number-of-cctv-cameras/