Pertwee, Courtney, Darrow & Aldred in "The Navy Lark"

I imagine it's terribly bad internet form to quote things from one internet forum to another to another to another ad infinitum because that's how rumours spread, but this story seems worth flagging to a more Doctor Who-y audience. I've just read over at the Missing Episodes forum that somebody else has read over at the "Navy Lark" forum that apparently Jon Pertwee lead a recreation of a "Navy Lark" episode at a DW convention in the 1990s, and fans are trying to track down whether anyone has a recording of it: