PC Francis Vasko, said: “I would like to speak to any members of the public, local residents or patrons of the First In Last Out pub who may have witnessed the assault.
“If you have any information please get in touch with us and tell us what you know in confidence.”
Two men, aged 28 and 30, both from Winchester, have been arrested on suspicion of assault occassioning actual bodily harm and have been released on police bail pending further enquiries. They are due to return on April 10.
Anyone with information should contact PC Vasko at North Walls police station on 101 or call Crimestoppers, the charity, anonymously on 0800 555 111.
More top news
The full list of referendum results for South East. Overall the area voted 55.4% in favour of 'Leave'.
Full list of referendum results for South of the Meridian region. Overall the area voted 52.9% in favour of 'Leave'.
Full list of referendum results for Thames Valley. Overall the area voted 51.9% in favour of 'Remain'.