Roughly 50 firefighters have worked through the morning to tackle the blaze at The Osborne View on Hill Head Road after an alarm was raised just before 2.30am.
Huge fire sees emergency services called and road shut portsmouth.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from portsmouth.co.uk Daily Mail and Mail on Sunday newspapers.
Watch: Dramatic footage as firefighters tackle inferno at pub portsmouth.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from portsmouth.co.uk Daily Mail and Mail on Sunday newspapers.