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I have looked into Hillview Investments and it appears they have an invalid/fraudulent website. Please see this link-
Even before I found this, I was going to tell you that this is a scam- in the UK, if anyone inherits money, there are no fees to pay to the Bank and there is no legal document called a "Deed of Lodge" or "Certificate of Deposit".
I can only therefore say that you should not disclose any financial information to them and certainly don't send them any money, as you will never see it again (I note you don't intend sending them any money anyway).
I am sorry this is not the answer you were looking for, but hope this assists you.