A treaty fleet big enough for Asia

Could the Washington Naval Treaty allow Britain a third Asian fleet, and would it deter Japan?

Only a much larger 12:10:7-style ratio makes it plausible, giving Britain enough capital ships and carriers for Atlantic, Mediterranean, and Indian Ocean fleets.

The problem turns on treaty arithmetic and global basing. A British third fleet becomes plausible only if treaty ratios rise enough to support separate Atlantic, Mediterranean, and Indian Ocean battle fleets, with carriers and escorts to match. The added force might not deter Japan outright. It would still alter the naval balance and could push Japan toward earlier negotiation because of the combined British and American odds.