In order to tie together 2 databases, there has to be at least one item of data, unique to each entry, and common to both datasets.
This is not the case for TV Licence and iPlayer.
TV Licence is basically Name and address, iPlayer is an email login id, and a password; ip address is not relevant, as for most users it changes every time the router is re-booted. The email address I use is purely a figment of my imagination.
How on earth can they tie these datasets together?