There is no central register of Wills. There have been many attempts to get one put together but it is never succeeded. Hence, it is a case of doing all the usual searches in writing to solicitors.
If this was 10/15 years ago, that he gave you the card, he could well have done another will, with another firm of solicitors even.
If the solicitors can’t find the will and have no record, it is highly likely that it was given to your brother for storage rather than being retained by the solicitor. It is not uncommon for us to be asked for a will from our deeds store and for beneficiaries to be adamant that we have the will and we cannot find it. We then get the file out (always stored separately) only to find that the last is the letter sending the client the will and telling them to keep it safe because they didn’t want us to store it. Whereas the Wills would be kept for ever, the actual file that produced the will would not be stored longer than about 7 years (it must be at least six) which may account for why the solicitors have no record.
If your brother is adopted legally then he is treated as a blood relative and so are you.
If there is no will that can be found, then the proceeds of the estate are dealt with under the rules of intestacy and with no parents alive, that means that you and your sister would it doesn’t matter what your brother said, the rules are quite clear.
If there is a house to deal with, or other substantial property or assets and not just a few odd bank or building society accounts, then you are going to need probate in exactly the same way that you would if there is a will.
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