Would those Poles countenance that move if they seriously thought for a minute that Britain is a more dangerous place than Poland?
Poles go to the UK, USA, Germany, etc. because they want to make money, first and foremost. Safety is not their top concern since Polish immigrants tend to be hard working and motivated and thus generally live in decent neighborhoods with low crime rates. USA is far more dangerous as a whole than UK (mainly due to the disproportionate black violent crimes, but that's another topic) yet USA has a hell of a lot larger Polish population than the UK. Chicago has more murders than any other city in the US and yet it has more Poles than any other city in the world aside from Warsaw. Most Poles live in either good parts of the city or in the suburbs so they aren't affected by the riff raff.
How many people died as as a result of culpable manslaughter in Poland last year
A lot less than get raped, stabbed, run over, or blown up by migrants in Europe every year. 2,700 road fatalities in Poland in 2017. More than double that amount of women get sexually assaulted by migrants every year in Germany alone - 1k assaulted on just NYE in one city .
n some way such deeds are as much of a crime as terrorist murder, because such dangerous and criminal manslaughter could be avoided
So can Islamic terrorism - don't let them in, and certainly don't allow them to commit attacks or travel to places like Syria and let them come back after knowing that they're terrorists! Now the public are asking a lot of questions on the anniversary of the London bridge spontaneous cultural enrichment event how a person can plan and direct out an attack despite being known to police as a terrorist and being under surveillance. It's likely the same excuse as with the Rotterham scandal - the authorities are too scared to do anything for fear of being called the r-word as PC has completely taken over.
Poland's rate of road deaths is 10.3. That is below the world, Americas, African, Asian, middle eastern average and only slightly higher than the European average. In fact, the rate is slightly lower than the USA's and on par with Baltic states like Lithuania and Latvia.