Could Japanese orders make CVA-01 affordable for Britain?

Is it plausible that Japan buying two CVA-01 carriers would persuade Britain to buy one in the Red Fleet timeline?

Yes, within that scenario: the Japanese orders bring the price down, while Britain's four Malta-class carriers explain why it buys only one.

In the Red Fleet alternate-history scenario, Japan orders two CVA-01 carriers and Britain adds one after the price falls. Britain already operates four Malta-class carriers in this scenario, which explains why it stops after a single additional ship. The proposed sequence is accepted as plausible under those assumptions. The Japanese purchase changes the cost calculation, while the existing British carrier force limits the size of the follow-on order.