No, I think everyone now is just more stressed and impatient nowadays, trying to do too much. And the lack of space in the UK serves to compound, lack of good old fashioned manners too
Obviously some people are just thuggish, thick c****, and some of them probably ride bikes too, motorbikes, horses, fly hot air balloons....
I think there is a good proportion of people who have either never learnt to drive or learnt or to drive elsewhere in the world on the other side of the road, in a free for all...