If they are not worth much
@MaNaAk they can be donated to a charity. Dad had some shares but they were divided up into small holdings, there were still some in my mums name and she died in 2011 I haven't done anything with them yet but I have decided that they will go to charity. The cost of selling each holding and then the problem of my mums holdings has decided it for me.
I could sell them but the fees would be almost what they are worth and then I would have to share the proceeds with my brother and as far as I am concerned it is just a whole lot of work for me and I don't want to do it. I think I will have to send off a copy of probate for dads shares and a death certificate for mum and that will be it.
You don't need a solicitor but you do have to all agree on what you are going to do and if one of you decides that they want to cash them in to receive the money, I would suggest that that is the person who deals with it. Let them do the work.
Dad had £4 worth of premium bonds from the 1950's which I had to sort out. They will remain in the draw until February 2021 and if he wins anything we will get it otherwise I will have £4 coming in in February that I will have to share with my brother.
Just go for the easiest option or let your brothers deal with it.