Who is The Boyces from Swimming Lessons and what is their importance?

In "One Sunday," the Boyces are introduced as the downstairs neighbors of from Najamai in C Block who are allowed to keep packages of beef in her freezer. Silloo, a cultured woman who plays records of "The Blue Danube" rather than Hindi movie themes, resents having to lend their daily newspaper to Najamai and accept her daily milk delivery in return for using the freezer. Son Kersi is an avid cricket player until being left off the school team, while Percy, four years older, prefers building model airplanes and reading Biggles books. Kersi now uses his cricket bat chiefly to kill rats with consummate skill.