I think it’s important to consider the dates. The Great Britain that recognized Brazil in 1825 was very different from the Great Britain that refused to recognize the Confederate States in 1861. Just think of all of the differences in the US in the last 36 years. Do you really think that, in 1979, people would not be totally outraged at gay marriage, legalized marijuana (in some states, portrayals of interracial couples on TV and movies, and a greatly relaxed attitude towards living out of wedlock?
As far as continuing to recognize countries that had slavery, there is a very large difference between continuing relations and starting new relations. The only apt comparison would be to point to a major country that Great Britain recognized after 1861 that had slavery. I suspect you can find some small Arab or Central Asian Emirate or Khanate that they did recognize after 1861, but certainly not a country the size and importance of the CSA.
Your statement that Great Britain abolished slavery in name only, because they continued to practice what amounted to slavery in India and Africa is partially true. The big point is the statement “what amounted to slavery”. The same point could be directed at many areas of the American South after Reconstruction, what with Black Codes, the Convict Lease system, Share Cropping, and Jim Crow laws. But, no one claimed that slavery was not abolished in the US. The same is true in the British Empire. Slavery was abolished in name in 1833. It took many decades for the practice to catch up with the law (same as in the US).
So my point remains the same. Great Britain refused to recognize the CSA due to the dislike of the Working Class of England of slavery (although the defeat of the Army of Northern Virginia at Antietam certainly helped). Further proof of this is the motion that the cotton workers of Manchester passed and sent in a letter to Lincoln. I quote from the motion “ That this meeting, recognising the common brotherhood of man-kind, and the sacred and inalienable right of every human being to personal freedom and equal protection, records its detestation of negro slavery in America, and of the attempt of the rebellious Southern slaveholders to organise on the great American continent a nation having slavery as its basis.”
“As far as continuing to recognize countries that had slavery, there is a very large difference between continuing relations and starting new relations. The only apt comparison would be to point to a major country that Great Britain recognized after 1861 that had slavery. I suspect you can find some small Arab or Central Asian Emirate or Khanate that they did recognize after 1861, but certainly not a country the size and importance of the CSA.”
The United States, which did not abolish slavery until the ratification of the 13th Amendment in 1865.
“Great Britain refused to recognize the CSA due to the dislike of the Working Class of England of slavery.”
How quaint. Now tell me what Parliament had to say about the matter of recognizing or not recognizing the CSA. Last I checked, Parliament set policy, not some laborers in Soho.