Re use of uninsured vehicles
There will be some where it's an innocent mistake, although for something so potentially important like paying third party compo, it is something which needs to be checked with great care.
In the cases where a driver knows their vehicle is uninsured, they must have an incentive to scarper eg after a crash or to escape from the police, although it's possible that an uninsured driver may drive extra carefully. It also seems likely that an uninsured vehicle may not be taxed and tested, or that the driver may be disqualified. These are all interlinked in that a disqualified driver cannot get insurance and (and I do know this is subject to exceptions) an uninsured vehicle cannot be taxed. To suggest that this doesn't affect danger seems a bit bold because I don't know of much which supports that either way.
Anyway, I didn't intentionally make the point which seems to be being attributed to me through a selective quote.
Re the extent of the use of uninsured vehicles, on the current thread about "cycleways" steady rider linked to the Red Tape Challenge - Road Transport (2011)
https://assets.publishing.service.gov.u ... ummary.pdf
I found an interesting comment on p 12 under Insurance
".... Insurance evaders will be identified through the new Continuous Insurance Enforcement process. ...."
If the numbers of uninsured drivers eg quoted by the MIB are correct, this isn't going well
The bit I've now emphasised is the point I was trying to make.