How a British monarch can oppose the government

What options does the British monarch have if the government plans an action the sovereign actively opposes?

The monarch could use private influence and indirect public signals. Forcing an election is discussed as a theoretical last resort whose use would probably prompt politicians to remove the claimed power.

A British monarch can oppose government action through private influence long before invoking a formal power. Staff contacts, influence in the Lords and Commons, weekly audiences with the prime minister, and access to government papers create several channels for pressure. The sovereign can also signal displeasure indirectly in public, a technique associated here with Elizabeth II. Forcing a general election is presented as a theoretical reserve power, but using it against the government would probably lead Parliament to close the loophole. The distinction is between routine influence and a disputed constitutional last resort with severe political consequences.