I think there's a degree of infantilising young adults here.
These are bright young adults going to uni, to take on courses that will allow them to pursue (hopefully) happy and successful careers which will enable them to be fully financially independent, and also to support their own kids. They are not children anymore. Yes, they need parental support in a variety of ways but they are growing up and moving on.
Parents have to be willing to start cutting the cords. They have to start letting the kids make some choices and crucially to take some responsibility. That's why it's actually really important they feel financially invested in their degree courses...that they understand the cost of the course fees, the cost of living and what is available as a government loan, how it's paid back and when, and how any shortfall is being made up and any role they can or should have within this. It's not good for them to head off knowing 'parents have sorted it out and I don't need to give it any thought, just go out and spend'.
And parents need to stop thinking that somehow financially supporting children forever, once they have their own means is somehow the sign of good parenting. It's not.
Good parenting and good financial planning, means thinking ahead and getting your child ready for the next stage and helping to take age appropriate steps, which include financial steps. One of those is becoming more aware of the wider impacts on other family memebers of their choices and actions. Kids need to understand what uni costs their parents and the impacts that might have on their retirement and working patterns.m that's not to say kids need to be made to feel guilty about any of it, but simply to have an understanding. And they also need to start learning g to make their own financial choices....choosing accommodation with an eye onthe orice, budgeting, taking on some work to fund some of it. Behaving like a 6 year old financially, or letting them do it, isn't a great parent funding their kid and providing for them, it's doing them no favours longer term.
And helping them udbertsand that you'll always be there, but it's expected that one day they are financially independent is right too. Just because you're their parent and they are your kid,M doesn't mean the parent always has to use their cash and make financial choices to benefit the kids....especially when the kid has some funds if their own.
These kids with £100k will need guidance. It would be a great pity if they piss it up the wall. They will need help thinking about what to do with it short term and medium term. They need help understanding the student loans they have and the implications of them, the cost of housing, likely career paths and possibilities if what to do with the money. They need to be involved in discussion and not just be to,d what to do with it.some expert financial advice might be useful and worthwhile. Sounds like it could be useful for the whole family. And it wouldn't be wrong for the parents to now be considering if this windfall which of course is for the kids, might also benefit them I their expenditure. This is in no way lookimg to rob the kids of their inheritance. It's quite simply that some of the expenditure they thought was required, might not be. That's great, it's not wrong to consider which options you mig now have that you didn't previously.
Some serious discussions and some expert advice are probably required and these young adults need to be involved, not as children, but as adults I really except of a large lump sum, entering in discussion s about their financial future.