Medallion Guarantee 2026 – How to Get in the UK

A Medallion Guarantee in the UK may be required when selling or transferring certain shares or securities held in the USA or Canada. It confirms the authenticity of a signature and helps protect financial institutions against fraudulent or unauthorised transfers. For UK residents dealing with overseas investments, obtaining this guarantee can be an important part of the transfer process.

What Is a Medallion Guarantee?

A Medallion Guarantee, also known as a Medallion Signature Guarantee or Medallion Stamp, is a security measure used for qualifying US and Canadian securities transactions. It provides assurance that the person signing the relevant transfer documentation is properly identified and has the authority to complete the transaction.

It is different from ordinary notarisation. A Medallion Guarantee carries specific liability for the organisation providing the guarantee, which is why transfer agents may require it before processing a transaction.

How Can You Get a Medallion Guarantee in the UK?

Obtaining a Medallion Guarantee in the UK generally involves providing documents that establish identity, ownership or authority to act. Where the securities belonged to someone who has died, documents such as the death certificate and Grant of Probate or Letters of Administration may also be relevant. Requirements can vary according to the circumstances and the transfer agent involved.

The process may also involve completing stock transfer forms and providing details about the securities and their value.

IWC Probate Services Helps in Medallion Guarantee

IWC Probate Services provides assistance with Medallion Guarantee in the UK, including standalone signature guarantees and support with share transfers or sales. Its service can also assist with relevant documentation, share valuations and overseas securities matters.

For anyone handling US or Canadian shares from the UK, professional guidance can make the documentation and transfer process easier to manage.