What two Town-class cruisers imply for the Free Polish Navy

How would the Free Polish Navy use two Town-class cruisers and several modern destroyers?

They would serve in Allied formations, but Britain giving away Towns implies a much larger and more powerful Royal Navy that changes where the Polish ships are needed.

Britain releasing two premier Town-class cruisers instead of older ships such as the historical Danae-class transfer changes the entire premise. If Towns are available for transfer, the Royal Navy must possess many more or significantly better cruisers in this counterfactual. Polish crews would use the ships in Allied formations for escort, surface operations, and naval gunfire support much as they used the vessels actually assigned to them. Their presence at battles such as North Cape would depend on which still more capable British cruisers now occupy the highest-priority roles. The scenario cannot be answered from the Polish order of battle alone because the transfer reveals a radically different Royal Navy force structure.