Sajid Javid
But Sajid Javid's former special adviser Salma Shah tells HuffPost UK the prime minister must also say sorry for his comments about Muslim women.
Chancellor has been criticised for refusing to produce Treasury analysis of Boris Johnson's withdrawal agreement.
Chancellor says PM was trying to "defend the rights of Muslims" when he said women looked like "letter-boxes" and "bank robbers".
The prime minister said people would get a £500 tax cut next year – which is not true.
It is the "fiscally responsible thing to do", says PM ahead of December 12 election.
Sajid Javid claims Jeremy Corbyn has made "eye-watering" commitments. But shadow ministers reject £1.2 trillion figure.
Shadow chancellor John McDonnell described the claims as "a ludicrous piece of Tory fake news".
Chancellor is ripping up the fiscal rules to fund investment but his predecessor says "ordinary taxpayer will pick up the bill".
Labour source says ministers "caught red-handed" trying to use civil service for "party political" ends.
Writing for HuffPost UK, the chancellor says: "Net Zero needs to happen in a way that makes us stronger and works for all."