Where to add Queen Elizabeth-class dry docks

Where should two additional Queen Elizabeth-capable dry docks be built?

In Britain, Portsmouth and Liverpool; for overseas coverage, Gibraltar and either Australia or Singapore are strong candidates.

Portsmouth and Liverpool are the preferred British locations for two additional carrier-capable dry docks. Together with Rosyth, they would spread repair capacity across different coasts and make all three harder to disable in one operation. For overseas docks, Gibraltar is one option. Singapore or Australia could provide the more distant location, with the choice depending on the financial deal offered.