Grand Café
1 South Western House, SouthamptonSO14 3AS
More of a posh restaurant than a bar and note that the bar doesn't open until 5pm on Fridays & Saturdays, with the restaurant opening at 6pm. Afternoon teas are available before then but need booking in advance.
Downstairs is
'Ruby's at the Grand' - a cocktail bar open from 6pm to 2am Fridays & Saturdays, last admission at midnight.