Trust for Vulnerable person in receipt of welfare benefits

Can anyone recommend a suitable trust precedent for vulnerable adult person for inheritance under will?

There is a also sizeable pension as an alternate option for them to benefit from their parents and the vulnerable beneficiary could possibly take a share of the parent’s pension to stay within the beneficiary’s personal allowance for income tax.

Default is for balance to pass to siblings.

Can anyone recommend a precedent trust deed or have any thoughts on any recent planning they’ve undertaken?

Thanks

I believe Chris Whitehouse has a precedent for this
Caroline Wilden
Probate Solicitors