Originally posted by Caranamrta
I don't think so. The English colonization didn't "raise the level of the civilization in the world", just forced the English civilization on the other people for the sake of the English' own economical raise.
Famines, bloody genocides and revenges followed each other, from Egypt to South Africa, from Ireland to Australia. Why were rebellious movements against the British administration constant in all their colonies? I suppose not because English raised their level of civilization. Rather they rebelled because the massive exploitation of their workpower and resources. Or because they tried to reachieve their lost independence. Maybe because they were full with the arrogance and racial hatred of the colonial officers. The English quelled these rebellions with the greatest cruelty, and revenged on the families of the rebellers to terrorize the people of that colony. On some territories the British tried to kill the entire pre-British population. Tasmania, Australia, New Zealand are good examples for this. But the British colonization tested the first concentration camps on the Boers too (not to find an excuse for the slave-trader and genocider Boers. British didn't traded with slaves because they forced entire nations to work for British for free.
No hurting intended on any British. I think that every colonizating empire did these deeds of horror. The difference is only the number of the slain people, and the numbers are differents because the colonizators' technical advancement was different. If, for example, Spanish had machine guns, they'd killed way more people as they really did. I would only show that empires are never good and English Empire wasn't exception too.
If yoy mean the British empire, as many scots, welsh and irish worked for the Irish. The Captain George who died in Sudan for the empire, Sir Michael O'Dwyer: India, to name a few.
British Empire according to the famous historian, Norman Davies, is a paternal one. Unlike the
macabre and savage European 
we tended to be fatherly to the conquered people. In fact before the Indian Mutiny, Britain tended to employ local inhabitants for the running of the Empire, though this tended to happen in are Indian Empire.
Famines etc. These famines, bloody genocides and revenges happened before we came and tended to decrease as we improved the farming tecniques.
The empire wasn't in a constant state of revolt at any point. Because the inhabitants were too ill educated to know better. This was until end of the 19th century when missionary schools and the like were producing there first generation of educated people. Before you, mention it the Indian Mutiny, was army mutiny after fears by the highly religious soldiers that the guns were oiled with pig and cow fat. (Cow being sacred by Hindu's and pig not a exactly being halal).
Killing local inhabitants, it was not imperial doctrine to kill local inhabitants, the killing of local inhabitants tended to be done by farmers that emigrated to parts of the Empire.
The concentration camps are indeed a blot on the British imperial horizon. It was terrible what we did, but not to defend are actions. Britain had been promised to govern over the Boer land after we defeated the aggressive Zulu's.
Compared with the likes of the Spainish, Portuguese or the French, the British empire was a better empire. But like all empires it failed so there must be something wrong with are empire.
PS. I know we still, kinda, have an empire.