I'm from a farming family, own a (much smaller) farm myself, and as it happens I'm also a tax advisor specialising in IHT, trusts, and estates.
I wouldn't personally have removed the uncapped APR for IHT, however I do think that long term it will have benefits such as better succession planning (very poor among most farming families, and a big part of the reason we are losing so many young farmers), and more alignment of the capital value of land with its yield (currently there is a huge disparity, in no small part because of investors - not farmers - buying land for the tax relief and not for the food production). Nor am I the only one who thinks this. I was surprised to see quite a bit of commentary in Farmers Weekly in agreement!
I voted Labour. I'd hoped for more, but overall I would vote for them again.
The Conservatives have proved to me over the last decade and more that they're not interested in farmers, and Reform would sell us down the river as quick as you could say 'chlorinated chicken'.
I don't think there is one party who I would say is truly focussed on British farming, food security, and rural areas. This is because no party will want to tackle the very thorny issue of food in this country being too cheap - imagine the outrage in the general population when the price of milk and bread doubles or triples when we are already in a cost of living crisis.
Nor would any sane government restrict cheap imported meat (see above) or prioritise a less varied but more seasonal diet (see above - imagine how the public will react should green beans and other vegetables from Africa be reduced in favour of aisles of cabbage, turnips, and swede).
No party is going to properly support farmers and tackle the supermarkets and conglomerates and make the price of food realistic. The public may loudly exclaim about how much we should value and support British farmers but the moment you suggest that means bananas are off the menu, you can't have fresh berries in winter, and you'll have to pay significantly more for staples like eggs, people tend to go quiet.