The League Championship is the main activity of the Quiz League of London. During the season, beginning around late September, matches are played on a home and away basis to decide the winner of the championship trophy. Additionally, the Ashman Trophy is awarded to the player with the highest average of correct 2 point answers during the league season. The regular league season is followed by the All London Cup. The league welcomes new players and teams to participate in its competitions, please visit the joining in page for more information.
Championship Trophy
Donated by Whitbread plc and awarded annually to the winners of the QLL League Championship. First competed for in the 1990-1991 season.
| Season | Winners | Runners-up |
| 2009-2010 | Broken Hearts | Pericardium |
| 2008-2009 | Nomads | Broken Hearts |
| 2007-2008 | Broken Hearts | Nomads |
| 2006-2007 | Broken Hearts | Allsorts |
| 2005-2006 | Allsorts | Broken Hearts |
| 2004-2005 | Allsorts | Atletico, Chester Army |
| 2003-2004 | Allsorts | Crown & Anchor |
| 2002-2003 | Allsorts | Atletico Manor |
| 2001-2002 | Atletico Manor | Allsorts |
| 2000-2001 | Barbican | Red Lion |
| 1999-2000 | Rue St. George | Barbican |
| 1998-1999 | Allsorts | Rue St. George |
| 1997-1998 | Allsorts | Rue St. George |
| 1996-1997 | Manor Athletic | Manor Corinthians |
| 1995-1996 | Manor Athletic | Allsorts |
| 1994-1995 | Manor Athletic | Allsorts |
| 1993-1994 | Manor Athletic | The Beehive |
| 1992-1993 | Diggers | Manor Athletic |
| 1991-1992 | Old Grammarians | Manor Athletic |
| 1990-1991 | Manor Arms | JHC |
Medway Inn Trophy
Donated in 1994 by the Whitbread Group and awarded to the winners of Division Two.
| Season | Winners | Runners-up |
| 2009-2010 | Gray Monks | The Banana Splits |
| 2008-2009 | Pericardium | Belly |
| 2007-2008 | Waterloo Sunset | Pineapple |
| 2006-2007 | Barb | Telstars |
| 2005-2006 | Uncosy | Aldersgate |
| 2004-2005 | Broken Hearts | Hogshead Chestnuts |
| 2003-2004 | Barbican | Hogshead Chestnuts |
| 2002-2003 | Broken Hearts | Animals |
| 2001-2002 | Rising Sons | Telstars |
| 2000-2001 | Chestnuts | Bread & Roses |
| 1999-2000 | Surrey Tavern OG's | Rosslyn Park |
| 1998-1999 | Chestnuts | Barbican |
| 1997-1998 | Ovalytes | Crown of Chelsea |
| 1996-1997 | Priory Players | JHC |
| 1995-1996 | Red Lion | Rue St. George |
| 1994-1995 | Hope & Anchor | JHC |
| 1993-1994 | Allsorts | Troglodytes |
| Pos | Division 1 | P | W | D | L | Avg | B | Pts |
| 1 | Broken Hearts (C) | 20 | 17 | 1 | 2 | 52.90 | 14 | 84 |
| 2 | Pericardium | 20 | 16 | 2 | 2 | 50.95 | 9 | 77 |
| 3 | Nomads | 20 | 14 | 2 | 4 | 50.15 | 12 | 72 |
| 4 | Atletico | 20 | 13 | 1 | 6 | 47.85 | 8 | 62 |
| 5 | Allsorts | 20 | 12 | 1 | 7 | 47.35 | 4 | 54 |
| 6 | Old Itonians | 20 | 10 | 2 | 8 | 45.55 | 9 | 53 |
| 7 | Telstars | 20 | 8 | 0 | 12 | 42.00 | 5 | 37 |
| 8 | Barb | 20 | 5 | 1 | 14 | 38.70 | 5 | 27 |
| 9 | Pineapple | 20 | 4 | 1 | 15 | 37.65 | 4 | 22 |
| 10 | Waterloo Sunset | 20 | 3 | 0 | 17 | 37.40 | 1 | 13 |
| 11 | Five Bells | 20 | 2 | 1 | 17 | 38.10 | 1 | 11 |
| Pos | Division 2 | P | W | D | L | Avg | B | Pts |
| 1 | Gray Monks (W) | 20 | 17 | 0 | 3 | 48.75 | 9 | 77 |
| 2 | Banana Splits | 20 | 15 | 2 | 3 | 43.65 | 3 | 67 |
| 3 | Rosslyn Park | 20 | 13 | 0 | 7 | 39.85 | 5 | 57 |
| 4 | Eclectics | 20 | 12 | 1 | 7 | 40.80 | 4 | 54 |
| 5 | Accies | 20 | 12 | 0 | 8 | 38.25 | 3 | 51 |
| 6 | Sons of the Dessert | 20 | 10 | 1 | 9 | 39.40 | 6 | 48 |
| 7 | Mealy Bugs | 20 | 9 | 0 | 11 | 39.10 | 4 | 40 |
| 8 | Ovalytes | 20 | 8 | 1 | 11 | 38.20 | 4 | 38 |
| 9 | Outcasts | 20 | 5 | 1 | 14 | 34.05 | 7 | 29 |
| 10 | Wharfside | 20 | 2 | 2 | 16 | 29.70 | 2 | 14 |
| 11 | London Scottish | 20 | 3 | 0 | 17 | 29.90 | 1 | 13 |
| Pos | Table | P | W | D | L | 2s | Pts |
| 1 | Sussex | 9 | 7 | 0 | 2 | 100 | 14 |
| 2 | Oxford | 9 | 5 | 1 | 3 | 74 | 11 |
| 3 | Mastermind Club | 9 | 4 | 1 | 4 | 111 | 9 |
| 4 | London | 9 | 4 | 0 | 5 | 95 | 8 |
| 5 | Beds & Herts | 9 | 4 | 0 | 5 | 85 | 8 |
| 6 | Cambridge | 9 | 2 | 0 | 7 | 78 | 4 |