In fact England was sued after the war and had to pay restitution to somebody over the damages caused by the CSS Alabama and others.
Someone else may know the details of this law suit. But how did England become party to a damages lawsuit, if there was no "official" recognition of the Confederate Government for the government of England to do business with?
If the business dealing between the Confederates and English ship builders was strictly private business, how did the English Government become a party to that lawsuit let alone have to pay damages? What was the English government role and liability in this?
Would a world Government do business with a group if they were JUST a band of rebels? There was a level of status here between the English Government and the Confederate Government that established a line of credit for the purchase of those goods shipped to the Confederacy and used on the high seas.