Why geography changes fleet organization through access

How would Royal Navy force structure change if the United Kingdom were thousands of miles long and wide?

It depends on access: free movement around the coast permits central command, while blocked routes force each region to maintain a more independent fleet.

The hypothetical makes Britain much larger, but physical size alone does not dictate naval command. If ships can move freely around warm-water coasts, a few bases and one central command can still allocate areas of responsibility. Separate standing fleets become necessary when land barriers or difficult routes prevent forces from shifting between theatres. Maritime access and reinforcement time matter more than the map's raw dimensions.