No Trustees on a Life Policy

I would if members could assist me.

I have a policy which is payable to two beneficiaries

Both settlors have died. There are two additional Trustees , one has died and the other has lost capacity but the family wont assist.

The insurance company have asked for proof that the person has lost capacity, which would require a letter from a GP.

As I understand it I can apply to the court under S41 TA 1925 to appoint the beneficiaries. The value of the product is £69,000 and as I understand it this is within the county court limit.

Can you please advise which form is used and which county court.

Many thanks