London (CNN) David Cameron has finally broken his silence on Brexit, admitting some people "will never forgive" him for holding the referendum.

The former UK prime minister launched an extraordinary attack on his successor, Boris Johnson, who is in the same Conservative Party. Cameron said he disagreed with the current PM Boris Johnson's recent tactics and added he believed a second vote on Brexit may still be possible.

"Taking the whip from hard-working Conservative MPs and sharp practices using prorogation of Parliament have rebounded," he said in an interview with The Times published Friday.

"I didn't support either of those things. Neither do I think a no-deal Brexit is a good idea."

Cameron is currently promoting his new memoir "For The Record," which will be published next week.

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