Editing Dido-class cruiser (section)

===''Bellona''s===
[[File:Bellona (cruiser)- SLV H91.250-1391.jpg|thumb|{{HMS|Bellona|63|2}} of the ''Bellona'' subclass]]
{{HMS|Spartan|95|2}} received no alterations as far as is known. ''Royalist'' was converted to an [[escort carrier]] squadron flagship immediately on completion, when an extra two twin 20&nbsp;mm were fitted as well as four single 20&nbsp;mm. She was the only ship to receive an extensive postwar modernisation ordered for service in the RN but was later loaned to [[New Zealand]]. Plans were drawn up to fully modernise the four improved ''Dido''s with either four twin 3-inch L70 guns or 4.5-inch Mark 6 gun turrets. However that would have required building new broad-beamed ''Dido''s because the magazines of the ''Royalist'' type could hold  only enough 3 -inch ammunition for 3 minutes 20 seconds of continuous firing.<ref name=m9/> The refit of ''Royalist'' was shortened and ''Diadem'''s was abandoned because the new steam turbines needed were unaffordable. ''Royalist''′s reconstruction, like that of ''Newfoundland'', incorporated much of the RN's late 1940s and early 1950s view of a desirable cruiser. ''Royalist''′s  5.25-inch armament was given some of the improvements of the final 5.25 inch mounts built for the battleship ''Vanguard'' but not the extra space or power ramming. Also added was a secondary armament of three STAAG automatic twin 40mm guns, new Type 293 and 960M radar and Type 275 (two sets) DP fire control for the 5.25 guns, and a [[lattice mast]]. {{efn|''Royalist'' was loaned to the RNZN in 1956, in exchange for ''Bellona''}}

''Bellona''  had four single 20&nbsp;mm added by April 1944 and received an extra eight single 20&nbsp;mm by April 1945. When she was loaned to the RNZN after the war, the twin Oerlikons were replaced by six single 40mm in the RNZN's own electric powered mount. ''Bellona'' was never fitted with six standard tachymetric directors which were requested by the RNZN for controlling the Bofors. The quadruple pom pom mounts were mothballed by RNZN for manning reasons but the single Oerlikons were maintained on ''Bellona''.

''Black Prince'' and {{HMS|Diadem|84|2}} also received eight single 20&nbsp;mm, and had a further two twin 20&nbsp;mm by early 1945.