There all "official" cams so you'd have exactly the same problem getting them to work. None of them appear to be Nagra either so not the correct system for UK cable.
The chip you want on your Nagra CAM will be the flash chip. Its going to probably have 48/56/64 pins likely to be on 2 sides only but some cams had bga chips (you wont be able to do these chips).
If your uncertain just post the chip numbers and i'm sure someone will tell you if its a flash or not.
Depending on the actual flash type, you may be able to read it on the willem