During this period, and through into the 1950s the Yorkshire League contained the 'A' teams of Leeds United, Huddersfield Town as well as both Sheffield sides, Doncaster Rovers and Barnsley, at this time often topped the 1000 mark.

With these sides came players including John Charles, Denis Law, Ray Wilson, Peter Swan, Tommy Taylor and Jack Charlton.

Following a restructure of the Yorkshire League the club found itself in the third division in 1970, by which time long=serving player Frank Lloyd, who would spend 50 years with Ossett Town, became manager.

During this period Graham Firth joined the playing staff as a teenager and would go on to become the club's first commercial manager as well as groundsman, barman and long-serving chairman.

Micky Bullock was appointed as manager and the club hosted Manchester United in a pre-season friendly where Lee Sharpe made his debut.

Local businessman Peter Wilkinson joined the committee as football chairman, as Graham Firth ran the off-field side of the club.

Gary Brook was player manager at this time, and following promotion guided the club to two eighth-place finishes in the NPL First Division, a mention in The Sun as their team of the week after a 7–1 away win at Whitley Bay, and also a run to the second round of the FA Trophy when 1,100 people came to Ingfield to see former League side Doncaster Rovers sneak away with a 1–0 victory.

The 2003–04 season saw a league re-structure with the introduction of the conference North and South, and the club were promoted to the NPL Premier Division.

They beat Stocksbridge Park Steels, Consett and Matlock Town to set up a home tie with Leamington Spa, with the winners earning a place in the FA Cup first round.

The Reds ended the season in 11th place and topped that in 2006–07 with a tenth-place finish, the club's highest league position in the Football Pyramid.

Despite a positive start to the season relegation was only avoided on goal difference as Kittrick left the club for Guiseley and a number of players followed him.

2012–13 started with the appointment of an eleventh manager in ten seasons as Craig Elliott joined the club[6] from NCEL side Glasshoughton Welfare, there was a large turnover of players in Elliott's 18 months at the club, 2012–13 ended with a 12th-place finish, a run to the first round of the FA Trophy and were a missed penalty away from taking FC Halifax Town to extra time in the Semi Final of the West Riding County Cup.

Reed brought in a lot of young players that summer: Brad Dixon signed from Leeds United, Nathan Curtis and Callum Hepworth moved from Bradford City.

Danny Frost[18] signed from Ossett Albion and former Doncaster Rovers striker Alex Peterson[19] joined him upfront.

Town shocked Scarborough Athletic on their own ground in the semi-final with a 3–1 victory[21] for The Reds, that set up a final with Farsley Celtic, who had looked odds on for automatic promotion until the club beat them 2–0.

A new stand was built at the Prospect Road end which was eventually seated, new changing rooms as well as additional terracing and covered areas.

In 1995 a match between the British Army and the All England Fire Service was held at Ingfield and in 1999 the Women's FA Cup Semi-final between Croydon and Leeds United.

Ingfield has also been used for many charity events, most recently in May 2017 £17,000[24] was raised by Darren Powell for Macmillan Cancer Research and the Bradley Lowery Fund, a packed house saw a game contested by many well-known faces from soaps and reality TV.

Another offer was made, and Ossett Town considered ground sharing with Dewsbury Rams RLFC [25] but again members voted against the plan.