help needed

Dear All,
I am trying to assist a few friends with an interesting matter regarding shares.

Is there a website or company to contact for shareholders to find any stocks they may hold, which are now delisted.

Basically, stock that has moved from your HIN to Issuer to now being delisted.

Thus no longer held at broker or Issuer holding.

Can you call a company and provide your details (name address) and see if any stocks are held as delisted?

Kind regards
INSIDER