Annually the 42nd Colombo Gold Troop conducts this Inter Patrol Competition Camp to select the best patrol of the year. This competition started in 1986 and the shield was donated by Mr. Sanjeewa Kongahawita which was named as Lt. Col. M.K.J Cantlay Challenge Shield in respect of Lt. Col. M.K.J Cantlay, the founder of Scouting at Royal College. Salalihini Patrol lead by Sachindra Kongahawita won the Lt. Col. M.K.J Cantlay Challenge Shield during the first year. Since then the patrols of the Gold Troop battle it out every year to win this shield, during the 3 day competition camp where more than 80 competitions are conducted. Following are the patrols that have won this prestigious shield so far.

1986 : Salalihini Patrol
1987 : Salalihini Patrol
1988 : Woodpecker Patrol
1989 : Woodpecker Patrol
1990 : Woodpecker Patrol
1991 : Penguin Patrol
1992 : Seagull Patrol
1993 : Parrot Patrol
1994 : Salalihini Patrol
1995 : Salalihini & Vulture Patrol
1996 : Kingfisher Patrol
1997 : Kingfisher Patrol
1998 : Seagull Patrol
1999 : Seagull Patrol
2000 : Kingfisher Patrol
2001 : Not Awarded
2002 : Eagle Patrol
2003 : Penguin Patrol
2004 : Seagull Patrol
2005 : Buzzard Patrol
2006 : Salalihini Patrol
2007 : Woodpecker Patrol
2008 : Buzzard Patrol
2009 : Buzzard Patrol
2010 : Buzzard Patrol
2011 : Hawk Patrol