The pilot reported that following the takeoff from the grass runway, he intended to conduct a touch-and-go before flying to his home airfield at Kemble. The circuit was flown as normal and after touchdown full power was applied. The aircraft did not seem to accelerate, so the pilot closed the throttle and aborted the takeoff; however he was unable to stop and overan the end of the runway. The aircraft was severely damaged when it subsequently collided with a hedge. The pilot believes that the lack of acceleration might have been due to a possible combination of the soft grass surface and carburettor icing.