When my 'significant other' was diagnosed with a terminal illness we chose not to make her last will & testimony because of the simple fact that she had nothing of material value to gift.,
BIG MISTAKE.
The main love in my life died & that death was a horrible experience for everyone concerned.Really sorry to hear about your partner mate.
Was the problem about her allowance not passing to you , assuming you wasn't married?
Very sad, but you haven't said why it was a big mistake,The main love in my life died & that death was a horrible experience for everyone concerned.
I can assure you that our tax position was very low down on our list of things to do, but thank you for showing your raising your head above the parapet & telling the internets that what is important to you.
but thank you for showing your raising your head above the parapet & telling the internets that what is important to you
You need a will to ensure your kids get full benefit of the higher IHT exemption. And to control how much else they get.For an unmarried couple it's essential, especially if you own a house. Otherwise your partner's relatives - close or even distant - will end up owning their half of your joint house.
Nonsense
For a married couple it's less essential but still a very good idea, especially if you don't have children so no descendants as an obvious default route. Couples do things together, so there's a very real chance that you'll both die together in an accident. If so you may not like where the money ends up by default.

please explain. Are you referring to dependant property.You need a will to ensure your kids get full benefit of the higher IHT exemption. And to control how much else they get.

You are married, correct?Really sorry to hear about your partner mate.
Was the problem about her allowance not passing to you , assuming you wasn't married?