A successful start led to a number of people mooting a new professional club and by the end of 1920 Guildford United was formed.
At the start of the 1936–37 season the club made the massive decision to turn full-time professional, appointing Haydn Green as manager.
That feat was nearly repeated the following year, with City finishing runners-up to Colchester United by one point, scoring 126 goals in the process.
Earlier that season City had attracted an even bigger crowd to Joseph's Road for an FA Cup 1st Round Replay against local rivals Aldershot.
A strict budget left the club short of players, resulting in a disappointing 16th-place finish, although they did manage to reach the final of the Southern League Cup again.
A second trip to Griffin Park ended with a 2–2 draw and meant a replay at Joseph's Road in front of 7,500 fans who roared City to a famous 2–1 victory.
Goalkeeper Peter Vasper was sold to Norwich City for £5000 and it was thought that this might ease the club's financial problems but they were worse than many had realised.
Promotion was obtained into the Combined Counties Premier Division, ground-sharing with Cranleigh FC while Spectrum was upgraded to meet the league's standards.
After escaping relegation and undergoing a season of improvement, in 2011-12 the club had its furthest progress in the FA Vase to date, but better was to come when the side clinched the Combined Counties Premier Division trophy.
Guildford City were switched to the Southern League Division One South & West for the 2013–14 season, with former Sandhurst Town and Cove manager Dean Thomas taking the helm.
The ground began as an extremely basic one but following City's promotion to the CCL Premier League in 2003/04 it was upgraded to meet the requirements of the division – a covered stand with 135 seats, a new officials changing room and toilets for public use being built.
Further improvements were made in 2011 and 2013 to meet requirements for Step 4 football, including extra seating, a covered terrace and hard standing around two further sides of the pitch.
The record attendance is 545 when a strong Woking side visited for the Surrey Senior Cup Semi Final on 15 March 2017.
[9] The club is keen to relocate from the ground however, and has pursued various options including groundsharing with Woking[10] and joining community regeneration projects[11] – none of which has yet come to fruition.
Guildford FC, 'The Pinks', played their matches at the Woodbridge Road Sports Ground and some suggested a groundshare agreement could be negotiated.
Not only was he prepared to support the project, but he interested himself personally in the formation of the new club, and granted a loan to acquire the Joseph's Road ground.
Mr Triggs Turner later set the seal on his generosity by wiping off the mortgage, and when the club came into being he was elected the first chairman of the directors.