Perhaps the largest single source of unclaimed money in the UK isn’t lost certificates, but “Windfall Shares.”

Over the last few decades, many famous financial firms “demutualized”—changing from member-owned societies into banks or PLCs. When this happened, they issued free shares or cash to millions of customers.

Yet, nearly £1 billion in windfall shares belonging to more than half a million people remains unclaimed.

The Worst Offenders Are you owed money by one of these giants?

• Standard Life: A massive £261 million remains unclaimed by 222,000 ex-members. This amounts to over 4% of the entire company!
• Halifax: Since its 1997 demutualization, an estimated 75,000 members have still not come forward to claim windfalls worth £158 million.
• Scottish Widows: Following the Lloyds TSB acquisition in 2000, over 59,000 members are still untraced, with £153 million waiting to be claimed.
• Friends Provident: Around 140,000 policyholders missed their windfall, worth an average of £1,200 each. (Note: Unclaimed shares here were converted to cash in 2004, so you would be claiming a cash balance).

Is It Too Late? Not necessarily, but companies do issue “final calls” (as Scottish Life did for its £7.5m unclaimed pot). If you had a mortgage, pension, or life insurance policy with any of these firms in the 90s or 2000s, it is worth checking immediately.