The headquarters of one of the biggest energy firms in the country has been vandalised hours before a protest was due to take place.

Red paint was splattered across the entrance doors and windows of ScottishPower in Glasgow city centre.

The act is thought to have been carried out in the early hours of Friday morning.

Glasgow Times: Colin MearnsColin Mearns (Image: Colin Mearns)

At noon on Friday, protesters began to gather outside the HQ in St Vincent Street for a planned demonstration against the energy price hikes and cost-of-living crisis.

READ MORE:Wyndford Residents Union speak out at energy protest at ScottishPower's Glasgow HQ

One of the protesters said the paint was there when the first people turned up and police said it was reported during the night.

The protest lasted around one hour with speeches from campaigners and union representatives and passed without any incident.

Glasgow Times: Colin MearnsColin Mearns (Image: Colin Mearns)

A Police Scotland spokesperson said: “Police were made aware of vandalism at a premises on St Vincent Street in Glasgow around 3.35am on Friday, September 30, 2022. Enquiries are ongoing.”

ScottishPower has been contacted for comment.