1975-1976
1st Round Sale Away Lost 15-16
1985-1986
1st Round Lymm Home Won 22-0
2nd Round Wakefield Away Lost 6-42
1986-1987 (John Player Cup)
1st Round Lichfield Away Lost 9-19
1987-1988
1st Round Vale of Lune Home Won 16-15
2nd Round London Scottish Home Won 11-9
3rd Round Coventry Away Lost 6-7
1988-1989
1st Round Stockwood Park Home Won 15-0
2nd Round Birkenhead Park Away Won 38-3
3rd Round Hereford Away Lost 6-10
1991-1992
1st Round Lichfield Away Won 16-12
2nd Round Wakefield Home Won 21-20
3rd Round London Scottish Away Lost 3-20
1992-1993
1st Round Hartlepool Rovers Home Won 39-16
2nd Round Sheffield Home Won 21-14
3rd Round Morley Away Lost 6-12
1993-1994
1st Round Bradford & Bingley Away Lost 6-12
1994-1995
1st Round
Barkers Butts Home Won 35-21
2nd Round Otley Home Won 29-28
3rd Round Rugby Home Lost 16-23 (aet)
1996-1997
1st Round Westleigh Away Won 20-19
2nd Round Sandal Away Lost 9-16
1997-1998
1st Round Hinckley Home Won 32-8
2nd Round Northern Away Won 22-5
3rd Round Doncaster Away Lost 11-24
1998-1999
1st Round Darlington Mowden Pk Away Won 12-8
2nd Round Winnington Park Home Won 47-10
3rd Round Stourbridge Home Lost 22-32
1999-2000
Prelim Round Bridlington Away Lost 22-36
2000-2001
1st Round Halifax Away Won 19-18
2nd Round Sandal Away Won 15-14
3rd Round Longton Home Won 23-11
4th Round Worcester Home Lost 12-76
2001-2002
1st Round Nuneaton Away Lost 9-17
2002-2003
1st Round Hull Ionians Home Won 19-13
2nd Round Waterloo Home Lost 32-37
2003-2004
1st Round Bedford Athletic Home Won 41-31 (aet)
2nd Round Blaydon Home Won 11-7
3rd Round Nuneaton Away Lost 19-23
2004-2005
1st Round Hull Away Lost 20-26
2005-2006
3rd Round Nuneaton Away Won 19-14
4th Round Moseley Away Lost 24-59
2006-2007
EDF Energy National Trophy
1st Round Morley Home Won 41-14
2nd Round Rugby Lions Away Won 23-12
3rd Round West Park St Helens Home Won 37-6
4th Round Leeds Tykes Home Lost 3-36
2007-2008
EDF Energy National Trophy
1st Round Broadstreet Home Won 43-13
2nd Round Darlington MP Home Won 17-11
3rd Round Hull Away Won 17-8
4th Round Manchester Home Lost 10-22(aet)
2008-2009
EDF Energy National Trophy
3rd Round Wadebridge Camels Home Won 39-5
4th Round Bedford Blues Home Lost 23-30

The National Knockout Cup ceased to exist after the 2008/9 season.