The radio group that runs the only other official music chart says it is "reviewing the situation" over the Ding Dong record.
Global Radio said it will release a statement once it has made a decision on whether the track will be played.
The group runs radio stations such as Capital, Heart, Xfm and Classic.
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Penny Mordaunt called it an “historic and great” day for Ireland.
A 61-year-old woman was taken to hospital with head injuries after the incident in Islington, north London.
Counting will begin on Saturday morning, with the result expected later in the day.