Two more, both RN refits.
When plans to build a class of Ikara frigates ended due to economic cutbacks etc (Novice's excellent DS381 and the later pared down 391) several Leander Batch I frigates were rebuilt to accomodate Ikara. An extra Sea Cat was fitted aft. This is HMS Naiad as she appared in 1977.
Several Batch II Leanders later were refitted with Exocet SSMs and a third Sea Cat launcher replacing the 4.5in turret. Her UA-13 extended her ESM suite to the lower frequencies used by radars like 'Top Sail' and so possibly giving the frigate a useful passive targeting for the Exocets against the larger Soviet cruisers and Kievs. This simple refit was considered roughly equal in capability to a Type 21. This shows HMS Minerva after refit.