Yes, but the hard drives have to come out of each box so it requires a bunch of PC hardware, and a programme to read the file formats correctly so that they transfer properly. I have the bits and software to do this.
There are a couple of caveats: First, any programmes from subscription channels still need an active subscription on the new box in order to view them. Second, this only works for Sky+ and Sky+HD boxes. AFAIK, it's not possible to transfer from say Sky+HD to Sky Q.
I advise my customers not to waste their time or money going down this route for recordings of stuff that can be downloaded from other sources.
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