[1] Playing in black and mauve hooped shirts with black shorts and socks and comprising a mixture of amateur and professional players, the club became members of the Football Association but were unable to join the Surrey Football Association as it would not accept professional members.
A difficult first season saw the club fail to field eleven players on several occasions and a deduction of two points for signing C.W.
Difficulties continued and the club were censured by the Southern League after arriving so late for a match at Sittingbourne that most of the crowd had gone home.
[1] Southern United managed to start the 1906–07 season, playing their first game a week after the rest of the league due to the suspension still being in place.
In January von Reiffenstein was censured by the FA after they ruled that Deptford Invicta were illegally acting as the reserve team for Southern United.