Would a larger surviving force of C-, D-, and E-class cruisers have allowed the Royal Navy to retire its older Arethusa and Town classes?
Short answerYes, although the older cruisers would probably be placed in reserve rather than scrapped immediately.
NotesA larger force of C-, D-, and E-class cruisers could allow the surviving 1913 Arethusa and 1910 Town classes to leave active service. Reserve status is considered more likely than immediate disposal. The older ships would therefore remain available after newer cruisers took over their duties.