Sorry to hear your cattle are still dying you have my full sympathy, we lost our 150 cow 10500lt ave herd over the last 4 years, over 400 cattle in total, all due to some disease ridden mad limmys rampaging around the countryside, the annoying thing is which you will have found out, there is know where you can get help unless you have a notifiable disease DEFRA do not want to know you so its all pay out for private help and then if you have to make a claim through your insurance company to cover the cost of what you have insured for, you have to fight the mafia the insurers have employed to make sure you never get paid, they work on the theory, "our pockets are bigger than yours and will remain so."
How can this government expect to make farmers pay for any diseases when they have cut out money on the disease help side, have an open door policy for imports and appear oblivious to the mafia style insurers who would make it damn near impossible for someone wiped out through foot and mouth to spend thousands of pounds over a number of years to claim their compensation, rant over.
When five of your best 12000lt + cows die in front of you in one week it makes you realise how vulnerable you are no matter how good your bio security is, so hang on in there and l hope your cattle deaths abate.