[1] In 1963 Portfield joined Division Two of the Sussex County League.
The club had no permanent ground at the time of their establishment, playing on various pitches including at Arundel Park Estate and St. James Square.
[1] However, they were not allowed to mow the grass, leading to the club being nicknamed "Field".
[1] In the 1950s the site of Downers became a gravel quarry pit, with Portfield playing at the Florence Road recreation ground until moving to Church Road in 1958.
[1] The ground was initially shared with a cricket team, before the football club became the sole tenant in 1961.