The former chair of the Post Office, Henry Staunton, who was dismissed last month, claims he was told by a top civil servant to "hobble into the election" and delay payouts to sub-postmasters, in a newly released memo.
But Business Secretary Kemi Badenoch told MPs there's "no evidence whatsoever that this is true", and called his allegations "a disgrace".
They come as only 5% of sub-postmasters claimants have received compensation for the Horizon IT scandal so far.
On this edition of the Sky News Daily, Niall Paterson speaks to Labour MP and chair of the Business and Trade Committee, Liam Byrne, who says it's now his job at next Tuesday's committee to "flush out who is telling the truth".
Plus, our deputy political editor Sam Coates discusses the fallout from this row.
Podcast producer: Alex Edden
Assistant producer: Evan Dale
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Editor: Philly Beaumont