I don't think Jeremy Bamber was a particularly physical child. I recall reading in some book about a knee injury he had sustained. He certainly never shone at school sports or he would have gained some credence or popularity with his peers and again this terrible alienation which he has somehow sustained throughout his life might not have taken hold. One never knows the truth of whether Nevill was a hard taskmaster or not(for example we are told Jeremy would never use the crop-sprayer or work overtime),but why no alternative career was suggested beats me.
Steve,,it was that particular day in which he'd worked for 17 hours,probably because it was harvest-time.
Now you mentioned that he wasn't " physical ",,so how do you account for the fact that after a days harvesting,that he'd pedal like billyo climb through a fanlight and then set about murdering all his family,then pedal back home ? Without the slightest hint of exhaustion,thoroughly drained and as pale as marble ?