Kemi Badenoch is set to use a major speech to declare she is “increasingly of the view” that the UK should withdraw from the European Convention on Human Rights.
The leader of the Conservative Party is expected to set out a plan to launch a commission into whether Britain should quit the treaty.
The ECHR was a dividing issue in last year’s Conservative leadership election, with Mrs Badenoch’s rival Robert Jenrick championing the idea that Britain should pull out.
Critics of the treaty want to leave it because it has been used to frustrate attempts to deport migrants from Britain.
Mrs Badenoch is expected to say that she is “increasingly of the view that we will need to leave, because I am yet to see a clear and coherent route to change within our current legal structures”.
