stepwilk,
My post was merely copied & pasted from the RNHF website so if it's wrong then it's their fault!
When I read your first post I was sure RNHF had 3 Swordfish which their website confirms, my understanding is that a 70 (ish) year old aircraft, that was obsolete even as WWII commenced, they always try to keep atleast one airworthy whilst, as an example, LS326 didn't fly for 9 years whilst BAe Brough were working on the wings.
Well how many are flying, as we write, well the answer is probably zero, I think you should rephrase your question as to how many are airworthy as it seems RNHF have two airworthy subject to any maintenance issues with an aircraft that's as old as one's grandmother!