Paintballing Grafton Underwood, Kettering - Welcome to the Grafton Underwood Paintballing Directory listing recommended paintballing venues in Grafton Underwood. It lists those who offer paintball and paintballing in Grafton Underwood, Kettering. Do you have a Grafton Underwood business? If so, why not advertise it on the Grafton Underwood Business Directory - IT'S FREE.