This is one of my all-time favourite postwar RN projects, probably because it was so radical for its time. I did a freelance version years ago which now looks pretty shocking so its nice to start again from scratch.
It's origins go back to 1949 as a project to combine the power of a light cruiser with the hull and powerplant of a destroyer. Ultimately it was further refined, the picture above is the Study 1 from February 1951, Study 2 had two 5in automatic guns forward and two Type 984 radars to act as a FADE, Study 3 removed the Type 984 but had all the guns forward. There were to be fixed torpedoes as well. Eventually by 1953 thoughts had moved onto a 'Super Daring' and more conventional designs. A full history can be found in Friedman's 'British Destroyers & Frigates' and 'Warship 2006'.
The armament of Study 1 is;
3x single 5in automatic guns
2x single 3in US 3in/50
1x Limbo
1x Ruler anti-torpedo rocket weapon (firing salvoes of four rockets)
I have omited the torpedo armament, there were differing layouts and requirements and the plans I've used for the Study 1 have no obvious locations. On Study 2, two sets of twins were fitted within the hull to give a broadside of eight torpedoes per side. I suspect the likely armament would have been two single 'Bidder' A/S torpedo tubes.