The UK should 'actively prepare' for a direct attack on British soil in a potential 'wartime scenario' for the first time in many years, the Government has warned.

In a national security strategy published today, ministers said the UK now finds itself in 'an era in which we face confrontation with those who are threatening our security'.

It highlighted Russian cyber attacks and sabotage against the UK, Iranian hostile activity on British soil, and other adversaries 'laying the foundations for future conflict'.

This includes them 'positioning themselves to move quickly to cause major disruption to our energy and or supply chains,' the strategy said.

It added: 'For the first time in many years, we have to actively prepare for the possibility of the UK homeland coming under direct threat, potentially in a wartime scenario.'