Thorndon Bowls Club is an active member of the English Bowling Federation (EBF), participating in five of its leagues
Ipswich & District 2 Bowl League (IPDL)
Stowmarket Evening 2 Bowl League (SL)
Stowmarket Afternoon 3 Bowl League (STAL)
Stowmarket Evening 3 Bowl League (STEL)
Upper Waveney 3 Bowl League (UWL)