@Gunnersaurus I was called and will answer. Like @nudge UK agricultural issues aren't exactly in my thoughts, but good economic policy oft is.
So there is currently a rule that prevents farmers paying inheritance tax on their property, and that is being rolled back to cover only the first 1 million pounds of value on the farm land. Beyond that, they will pay tax on 50% of the remaining value, at a rate of 20% (instead of 40%) that can be paid over 10 years interest free.
Additionally, you get 500k nil rate inheritance that stacks on tip of that, which is also per person mind you, so a farmer with 2 owners would be completely tax free at even a value of 3 million if it had 2 owners.
That is an ABSURDLY gentle tax on a high value productive asset. Tell your farmers to fuck off.