There are probably thousands of traffic laws, but who is going to enforce them ? The police simply don't have the resources. If they were to catch every offender, they would need a million police officers in London alone. The number of driving offenders caught every day is probably less than 1% of all offenders.
There were many occasions when police looked at me while stopping at traffic lights, but never warned me for not wearing seat-belt, let alone fine me, not once in over 30 years. This is not just luck, it's because they don't bother.
I remember when I was driving well over a year without insurance. Was never caught.
Don't tell the police now.