This is the first time that Royal College won the Bradby encounter since 2010.
The first leg of the 71st Bradby encounter took place on May 9 in Kandy at which Royal College won 23-22.
At yesterday’s second leg, Royal college were leading 18-nil at lemons.
They gathered their 49 points through seven tries, four goals and two penalties.
This was the 31st time that Royal College had secured the Bradby Shield.