(I'm just going to summarise now)
The UK produces only ~60% of the food it consumes, by tonnage, and only 49% by value.
90% of fruit and 45% of vegetables are imported, mostly from the EU, this will inevitably be disrupted. We're not exactly healthy eaters to start with
27 000 migrants work full-time in agriculture.
70 000 more in food manufacturing, 33% of its total workforce.
Another 75 000 work seasonally picking British fruit and vegetables.
We need them.
I mean, COME ON! How are SME's and even bigger businesses expected to cope with the additional costs of Brexit??