Polystyle Holiday Special
From Tardis Wiki, the free Doctor Who reference
Polystyle Holiday Special is an invented name for three 1970s releases by Polystyle Publications, Ltd. Often confused as annuals for the Polystyle magazines, TV Comic or TV Action, the specials were actually all standalone publications, and weren't actually part of any series. For convenience, however, they are grouped together here under a name which clearly distinguishes them.
Published at different parts of the year — in the nonconsecutive years of 1973, 1974 and 1977 — the Polystyle specials were highly anomalous.