Yes, but as you acknowledge, we've outsourced most of our manufacturing to countries that now produce what we used to produce (China etc) - hence our carbon footprint is lower and theirs is higher, therefore, we are still part of the problem. The data you cite shows that taking that into account means we are currently at around 1947's CO2 emissions level.
Also, we originally started the ball rolling with the Industrial Revolution and the world then followed us. From 1709 (which could be picked as the start of the Industrial Revolution, when Abraham Darby first used coal in his blast furnaces) the UK was the top emitter of CO2 until it was overtaken by the USA in 1888. The USA was the largest emitter from then until it was overtaken by China in 2007.
179 years on top for the UK (coal, mostly - oil and gas didn't really made any contribution during those years).
119 years on top for the USA.
16 years on top (so far) for China.
Therefore, it would be natural justice if we are the first to finish it and fully implement the Green Industrial Revolution.
NASA say that CO2, once it’s added to the atmosphere, hangs around for a long time: 300 - 1,000 years, so Britain's historic CO2 emissions still count (even if they were
cumulatively lower than China's last 8 years of record-breaking emissions).
Persuading other countries (like China, the USA and India) to do the right thing will be impossible if we carry on opening new coal mines and drilling new oil and gas wells in the North Sea with the intention to close them all in 2049, (just before our legal commitment to go net-zero begins). After all, we are/were the biggest oil producer in western Europe. They will simply label us hypocrites who built our country's hegemonic position on fossil fuels and still continue to extract, use and export them.