In theory the King can veto any law he wants. In practice he couldn't without causing a monumental constitutional crisis that would probably end his reign. His unofficial ability to influence government policy is the real issue, but one that is definitely not limited to that one guy with the special blood.
> In theory the King can veto any law he wants. In practice he couldn't without causing a monumental constitutional crisis that would probably end his reign.
His mum Lizzie2 had no problem doing it without causing any problems:
