Why Britain could build Dutch battlecruisers

Could Britain build four Dutch battlecruisers based on the smaller King George V twin turrets instead of only three?

Probably, because British yards had spare capacity and would welcome a foreign order that helped support their infrastructure.

The design's displacement would depend on its required speed and armour. British yards are nevertheless judged capable of building three or four Dutch ships in the 1930s. German yards lacked comparable spare room for the order. Britain would welcome Dutch money toward its underused shipbuilding infrastructure.