Mr Johnson was left furious after some of his political allies - Nadine Dorries, Alok Sharma and Nigel Adams - were not given the places in the House of Lords he nominated them for

The appointments were blocked by the House of Lords Appointments Commission (Holac), which confirmed it had taken eight people off Mr Johnson's list.

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The former prime minister was reportedly furious after Mr Sunak refused to reinstate or his nominations consider nominating them later on, with Holac not wanting sitting MPs to be put in the Lords.

Speaking from London Tech Week, Mr Sunak said: "Look, when it comes to honours and Boris Johnson.

Boris Johnson asked me to do something I wasn't prepared to do because I didn't think it was right.

"That was to either overrule the Holac committee or to make promises with people.

"I wasn't prepared to do that - as I said, I didn't think it was right.

"And if people don't like that, then tough."