Therefore, its known narrative elements are not a part of the Doctor Who universe as we, on this Wiki, choose to define it. It may have been the basis for a similar story in another medium, however — and that story may indeed be valid.
There Are Worse Things Than Angels was an unproduced Doctor Who novel pitched by Lawrence Miles to the BBC Eighth Doctor Adventures in early 1997. It was rejected by editor Nuala Buffini because it was "too graphic" for what was planned to be family series, and The Eight Doctors was commissioned in its stead.
The opening scene was a ritual with a frozen chicken which was "like a necromantic version of the 'Sledgehammer' video". The novel would have been set in the 1970s with a British proto-UNIT paranormal investigation team based on Reagan and Carter from The Sweeney.