If you want to see if gun control laws are actually working look at the numbers before and after the laws were passed.
I would be willing to bet if gun rights were restored to law abiding UK citizens that the gun crime numbers would not increase significantly. It would still be that one group using firearms to commit crime.
Gun control laws are that which politicians sell to the masses to make them feel safe.
You told us that criminals are still getting guns and committing crime with them. Looks like the only people gun control in the UK has slowed down is law abiding citizens who would never have probably committed crime with them.
If you think that gun control laws work then have the police force give up all their firearms. It will not be the law abiding citizens you have to worry about.
Have a nice day at the range
NRA Life Member