Appliances from Cosham, Fareham & Southsea were called to a large industrial blaze at 05.28pm.
Firefighteres have been dealing with a fire on an industrial unit at Castle Trading Estate, Portchester.
Firefighters arrived to see a factory unit ablaze.
Crews used breathing apparatus, Jets Hosereel & PPV Level 3 to clear smoke from the unit.
A full fire investigation is now underway.
More Stories
Armed Police Respond to Teenager Seen with ‘Gun’ in Busy Portsmouth Shopping Centre
Major Portsmouth Road Reopens After Pedestrian Hit by Lorry
Emergency Services Respond to Serious Incident in Hilsea
Broad Daylight Bloodbath: Five Arrested After Serious Stabbing in Portsmouth