The Brits invented concentrations camps during the Boer Wars. We can't blame the Nazi for that.
The Brits though they had a god-given right to all the land of the world; 'a third of the world was pink'. Even using Australia as a mass prison while moving on/killing the aborigines. Is that worse than the Nazi idea of Lebensraum?
They also raped and killed women and children..
Both indoctrinated the average person to further the goals of the elite. IE Getting big men more power, money and worship.
An example of British brutality would be the utter destruction of Benin 1897 which resulted in all the cities goods being carried off to Europe as trophies. You may like to know that these have still not been returned to their rightful owners in contrast to things the Nazis carried off.
As is ever the case, the victors write history. Horrendous things were done by both but we can't forget the Brits did horrible stuff to.And the real sad thing is , they teach the kids growing up in school that it was all sunshine and they sat around a table and at dinner but they fail to mention how the Brits slaughtered my people)