A bilateral treaty cannot isolate Britain's global naval race

Would Britain accept a 1908 treaty limiting Germany to two smaller capital ships per year while Britain built five larger ships?

No; the proposal addresses Germany's numbers but ignores Britain's qualitative competition with the United States, Japan, Italy, and other navies.

Britain could not freeze gun size and displacement solely for a bilateral bargain because its ships also had to lead or match other powers. Separating Germany into its own strategic sandbox misunderstands the Royal Navy's worldwide obligations and design pressures.