I've never left a review before - but feel it's im...

I've never left a review before - but feel it's important to warn others before going here. Without doubt had the worst eating experience here. Staff were disinterested, slow, rude, uninformed, and at points were aggressive. My boyfriend is very allergic to nuts, and they were really unhelpful with this. When checking if there were any concerns, he was given an allergy book - confusingly set out - where (this wasn't explained to us) you had to check each element of your meal individually. They gave us the wrong book the first time, and weren't able to give us any advice themselves. When the food arrived, there was stuffing that looked like it had nuts, no-one working there had any idea if it did have nuts in - even though it's apparently a standard on every roast. After being told then we were supposed to cross reference every element on the plate in the allergy book (surely it should be done by whole meal as one, or at least tell the customer, if the customer is required to check this themselves to minimise any potentially life threatening risks?), the staff gave us the book to check again. When we mentioned to their staff that this hadn't been very clear, and with the potential for a dangerous outcome, they were aggressive, defensive and completely shook us off. No apology about this, and we were completely shouted down - I (and many of the people I was with) have worked in customer service and as a waitress for years, and I wouldn't dream of speaking to an upset customer like this. The food we had was very poor, potatoes and veg tasted/texture was like they had been reheated and were a day old, other food tasted like it was from packet mixes. Service was slow (food being brought out over an hour from ordering - and still then brought out in batches over 10 minutes so food was cold for some of our party when we started eating), and communication was bad between the staff - we were told multiple times by different staff members that a menu option had run out and would be swapped. The bathrooms were dirty too. After all that, we had to wait at a near empty bar to pay where staff didn't acknowledge us. It was almost funny - and a fitting ending to such appalling service. We very nearly just walked out - even after loudly speaking about this, the waitress in front of us didn't even make eye contact with us. I've been to multiple Greene King pubs and never had anything like this. Such a shame as it's a beautiful setting with a beautiful beer garden - there's so much potential, if the service hadn't been like this.