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
Have you seen missing Mark Harris?
Man jailed for more than two years and given 20 year sexual harm prevention order for committing child sex offences
Thieves steal £13,000 worth of cigarettes from Gosport supermarket
Witness appeal following assault in Bishop’s Waltham