For queries regarding lost NS&I products, including Premium Bonds and Post Office accounts, contact:
National Savings and Investments
Tracing Service
NS&I
Sunderland
SR43 2SB
Email via contact form
Telephone: 08085 007 007
National Savings and Investments www.nsandi.com
For queries regarding lost accounts with banks, or with building societies that are now banks:
My Lost Account
PO Box 187
Brighton
BN41 9FT
Email: info@mylostaccount.org.uk
Telephone: 01273 035 060
UK Finance www.ukfinance.org.uk
For queries regarding lost accounts with current building societies:
Lost Savings
The Building Societies Association
6th Floor, York House
23 Kingsway
London
WC2B 6UJ
Email: lostaccounts@bsa.org.uk
Building Societies Association www.bsa.org.uk