Apparently ?
Farm workers are farm workers. There is no reason why they should be close to the family. If they knew things which could support Jeremy, the defence could call them up as witnesses.
If you'd read the right literature,,it would have told you that most character references pertaining to Jeremy,,,were pushed to one side,,and not even the defence had privy to them. Also Mrs Foakes told one of the officers that " Jeremy didn't have the gumption to have murdered anyone ".Her statement went walkies. So what chance did Jeremy stand with all this going on ? They wanted a conviction,,and patsy Jeremy fitted the bill.