@willp789 to avoid confusion i think you need a bit of an edit.
Along with giffgaff's very questionable Haloween TV ad,the competition you mention has also been pulled.
Edit to add. Details of the advertising campaign being cancelled here:-
Shame about the late news about the Halloween changes 🤔😕
It wasn’t late news. The update about pulling the hallowe’en ads was made at 11:29 this morning in this thread: https://community.giffgaff.com/t5/Announcements/Halloween-2018-First-Look/td-p/22513181
This edition of The Gaff was posted at 18:00 today.