Crews from across Southampton rushed to tackle the fire at Bassett Green Fish Bar in Bassett Green Road.
At least six engines are on the scene as well as paramedics and police.
A Hampshire Fire and Rescue spokeswoman confirmed that four fire engines and three support vehicles were called to the scene.
One lane of Bassett Green Road is blocked with traffic being diverted via Lobelia Road.
A Hampshire Constabulary spokeswoman said: “We were called at 11.14am today, 8 September, to reports of a fire at a premise on Bassett Green Road, Southampton.
“Officers have attended to assist HFRS as they deal with this incident.”
Commercial Fire #BassettGreen #Southampton A number @Hants_fire crews attended. Initial priorities, objectives & fire attack from 1st attending crews allowed incident to be brought under control fairly rapidly. @hfrs_control @JamieCousins pic.twitter.com/aWym6E1y18
— Paul Riddell (@paulrids) September 8, 2020
The situation is ongoing.
More to follow