I really don't know what's needed politically to get to this point. Treat it as a fun little thought exercise.
Assuming such a configuration does indeed happen in 1914 (Britain, Japan & Portugal vs Germany, France, Russia, Italy & various minor European countries bullied into joining them), who wins the naval and colonial conflict?
At first, things seem evenly matched
taken from here:
However, Britain has the option of ignoring the Mediterranean (thus rendering the Italian, French Mediterranean and Russian Black Sea Fleets useless) and picking off vulnerable colonies across the globe, all while keeping a superior force in the North Sea to prevent any breakout.
So, can Britain win this, or are they destined to lose?
(British victory, for the purposes of this thread, is defined as either taking and keeping all enemy colonies not bordering the Mediterranean, or decisively defeating the continental navies)