Maps of the Current Distribution of Y-DNA Haplogroup R1b

Diana, Goddess of the Hunt — for Ancestors!

Source: WikimediaCommons, Author:Cadenas2008 (23 Oct 2008).	Source: WikimediaCommons, Author:Crates (27 Jan 2009).
The main difference between these maps is that Crates labels Ireland as 90% and changes the area labeled 70% by Cadenas to 60%. I don't know which author is correct, but the details don't matter as much as simply being aware that R1b is a mainly European haplogroup heavily concentrated towards the west and in the British Isles.