Basil,
Yes, I am, of course, aware of the distinction between concentration camps and 'death camps'.
See
here for a reasonably informative article on Britain's invention of the former. There are thousands of other easily available references, both on the web and at your local library - there is little challenge to the idea that Britain invented concentration camps.
Britain's behavior during the Boer war was not our finest hour although, in a pre-global comms, pre-internet era, where it was possible to control the message to a large extent, those tactics could be said to have achieved the strategic aim. Those tactics would not work today.
Sun.