Downing Street said deeper co-operation in the face of rising hybrid threats from Russia would be high on the agenda during Burnham's first official visit to Germany.

Kemi Badenoch has the support of her party but the Tories still trail Labour and Reform in opinion polls.

It has emerged Lubna Speitan was listed in court documents as a "close friend" of a man later jailed for supporting al-Qaeda.

The Opposition leader made the pledge as she said the Tories face a "battle for the soul of the this nation".