The British committed acts of genocide in virtually every colony. Just because they were not as efficient as the Germans, don't think they were not every bit as depraved.

http://en.wikipedia.org/wiki/Jallianwala_Bagh_massacre

http://www.independent.co.uk/news/secret-massacre-slaughter-...

http://www.guardian.co.uk/world/2013/jun/05/kenyan-mau-mau-p...