Britain joins Japan against Russia in 1904

What if Britain fully joined Japan in the Russo-Japanese War?

Russia could not reinforce the Far East, while France would likely avoid war and fracture the Franco-Russian alliance.

British sea control prevents the Russian Baltic Fleet from reaching East Asia and lets London support Japan with maritime supply and additional naval pressure. Britain does not need to seek a major land war with Russia to make that intervention decisive. France is theoretically obliged to aid Russia, but lacks both the naval advantage and the political desire to fight Britain in 1904. Refusing to enter would break the Franco-Russian alliance, while joining would expose France to an unwanted maritime war. Germany might then exploit Russia's isolation by backing the Anglo-Japanese side, turning an Asian conflict into a major European alliance crisis.