Strictly mistake 'unforgivable'

Tom Chambers and Camilla Dallerup could not have avoided a dance-off

The BBC has said it was "unforgivable" that the controversial outcome of Saturday's Strictly Come Dancing semi-final had not been foreseen.

BBC head of entertainment production Jon Beazley told BBC Breakfast "exceptional circumstances" had caused the scoring anomaly.

Almost 1,800 people complained after all three celebrities were put through to the final.

Unhappy viewers will be offered refunds if they request it.

"That's the unforgivable thing about this - we should've seen it coming," Mr Beazley said.

"The fact is we didn't so we're doing whatever we can now to sort it out."

He said there were many contingencies on the show, "but nobody had planned for the exceptional circumstances of a tie at the top of the leaderboard".

He added that the show was not fixed and that "nobody was complicit in any discussion about it".

The audience vote from Saturday's show will still count and the results will be revealed during this weekend's final.