BBC Summary
Supporters of the former chancellor, Rishi Sunak, say he's got the backing of the 100 Conservative MPs needed to enter the race
The BBC has confirmed 93 backers, but Sunak hasn't yet said he is standing
Boris Johnson is on his way back to London from his holiday in the Caribbean as speculation grows that he will enter the race
The trade minister Sir James Duddridge said the former prime minister told him that he was "up for it"
The Leader of the Commons, Penny Mordaunt, is the only person to announce their candidacy so far
Leadership hopefuls have until 14:00 on Monday to gather the support of 100 MPs, with a new PM declared by Friday
Political instability and high inflation means UK is less likely to pay back debts, says agency.
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The UK's economic outlook has been lowered to "negative" by ratings agency Moody's due to political instability and high inflation.
Moody's changed the UK's outlook - which is a marker of how likely it is to pay back debts - from "stable".