This is unicorn stuff. Whole idea of taxation is supposedly to level up. London doesn't spend all the tax revenue it earns, Cornwall will be a net recipient. Within London, Chelsea and Westminster residents will be net contributors, Dagenham probably net recipients etc.England hasn't existed as a political entity since 1707, so it can send payments anywhere. The fiscal transfer to Scotland comes via the U.K. Treasury and is funded by English taxpayers.
I want the pooling and sharing of U.K.resources to fund U.K. citizens equally, not the situation we have at the moment where for political reasons some U.K. citizens are being bribed with cash to stay in our unequal union.
I have no issue with Scotland as a whole being net recipient of funds. What irks is the constant bleat from the SNP that they are victims.
As Al says, there needs to be some levelling with the Scottish people about how an Independent Scotland would be economically independent, without said transfer of funds and whether they would create their own currency (requiring a huge surplus initially), use the Euro (requiring a controlled budget deficit set by Brussels, and oversight from the ECB) or tie to the English £ (and so not actually be economically independent at all)
Anyways, back to Boris. He isn't the man to save the Union. His schtick doesn't work north of Carlisle.