This subject was very emotive. Perhaps because the symbolism of Hereford beef cattle is a strong one in Herefordshire (not surprising really!), and being asked to eat differently, eg a more plant-based diet, is a very personal incursion into people's lives.
I think it's going to be a tough one to shift. The other two subjects of Transport and Buildings are equally tough to change because of the huge costs and massive infrastructure changes - and this all should have been attended to years ago (as they've been doing in Sweden and Germany). It's a mammoth task.