No, Britain is not a "repressive nation." The British government surely takes some repressive actions, but not to such a degree as to be labeled a repressive nation.
Are we talking about the same "CCTV everywhere" nation?
The same "lackeys of the united states --GW Bush etc-- policy and partners in war crimes" nation?
In my opinion, this style of argument is not helpful. It reminds me of this quote:
"To say that the CIA and the KGB engage in similar practices is the equivalent of saying that the man who pushes an old lady into the path of a hurtling bus is not to be distinguished from the man who pushes an old lady out of the path of a hurtling bus: on the grounds that, after all, in both cases someone is pushing old ladies around." -William F. Buckley
250 years? They had colonies all over the world until merely 50 years ago. Doing stuff from direct slavery to mass executions, to fighting natives asking for freedom with submachine guns. And they still interfere in their ex-colonies politics (not to mention being the US lackeys and partners in all kinds of invasions). They even cheered when their "prince" did his first killings of their "enemies" in Afghanistan, like they had any reason for being there in the first place.
China also never killed, directly or indirectly, millions of people in Taiwan. Britain can't say the same thing about India, Bangladesh, Afghanistan, Iraq, etc.
But then I probably wouldn't bring up responsibility for the deaths of millions of people to defend a state founded by Mao Tse Tung...
Read about the Opium Wars for some context.