Chief Inspector Peter Ayling said: “Kent Police has launched an investigation into the cause of a fire which has affected the power supply to thousands of homes in the Dartford area.

“We are working closely with Kent Fire and Rescue Service fire investigators and other partners to minimise the risk and disruption to the community.

“However, extensive fire damage has been caused to a cable tower which in turn has impacted heavily on both local businesses and residents.

“We have committed significant resources to investigate the cause of the incident and inquiries are ongoing. It unclear at this stage whether this was criminal damage to or attempted theft of high voltage cable.

“Along with our partners, we are working to reassure the local community and provide assistance to those who are vulnerable.”