The 22-year-old singer joined Team Danny on Saturday night, after impressing with his take on Plan B track She Said.
And it mean that Bill and fiancée Sasha would have to move their wedding if he made it to the final.
But the singer has apparently let slip he failed to make it through the battle stages, which were filmed in February.
The Daily Star report that Bill revealed he had already had his stag do, saying: “Yes. It was a small local affair.”
The Voice UK battle rounds air over a special weekend on April 21 and 22.