A reading route into the Royal Navy submarine campaign

What is a good starting book on the Royal Navy submarine campaign?

Start with work on the Mediterranean campaign, but expect gaps because no strong single-volume history of the wider Royal Navy submarine war is identified.

The recommended entry point beyond American and German submarine campaigns is work on the Mediterranean, including HMS Turbulent. No single satisfactory book covering the wider Royal Navy submarine campaign is identified. The gap reflects the research and archival work still needed to connect dispersed operations. The literature offers a practical Mediterranean starting point without one volume that covers the whole subject.