My dad told me three years ago that he and mum both had £20k to do as they wished and the rest going to spouse, or if they have died first was split between me and my brother. I didn't know what he "wished" for his £20k.
He died a couple of months ago and the £20k is actually £100k, split between me and my brother.
My mum gets the rest.
However, my mum didn't know what he had put in his, despite her having the same in her will. She thought it was all his personal assets split three ways, me, bro and her, and joint assets to her. So, we are all better off than we expected.
Except my sister, who gets nothing.
My mum's will says £100k split three ways between me, bro and sis. Residue to dad, unless he dies first (which he has) and then split three ways.
BUT, mum's will names my bro as executor and he is, frankly, useless. He has done zero to help mum with dad's death.
Also, she now wants to leave something directly to her grandchildren (my sister's children who she has literally ignored for thirty years, and my brother's two year old) so she needs to write a new will.
Meantime she is gifting my sister £50k to match what my brother and I get, and pretending dad left it to her. I just have to not say anything and hope sister doesn't get any ideas about downloading the will from the probate office!
So complicated!