Vickers marketed available designs before tailoring new ones

What shaped the early history and recurring design quirks of Vickers?

Its habit was to market designs already available rather than begin by tailoring a new product to each sale.

The short explanation for Vickers' recurring quirks is its sales policy. The company is described as trying to find buyers for products it already had, with less emphasis on developing a new product specifically for a sale. That assessment ties design choices to commercial incentives. The answer remains general, with no individual ship or contract examined to show how the policy worked in practice.