Alas, the videotape isn't commercially available. If you want a copy, you'll have to contact NOVA at 800-255-9424 (I have not tried this number - I don't know if they are the right place). You might also try http://www.buyindies.com/listings/2/9/FCTS-29262.html ... again, no guarantees. Alternatively, try calling your local library -- they may have a copy. I can't make a copy for you -- I don't own a TV.
British viewers of ITV/Yorkshire Television may also have seen a 1/2 hour show, "Spycatcher". It's also based on Cuckoo's Egg, but we had a lot more fun with it. Copies of this may be available from Yorkshire Television in London.