As I dig around for information I find this. Again of particular interest to UK folk but ultimately informative to everyone.

"Since launching in 2021, State Street Digitial has been focused on addressing the industry’s evolving shift to digital finance. Most recently, the Digital division announced it had entered into a licensing agreement with Copper.co, a London-based provider of institutional digital asset custody and trading infrastructure. State Street Digital will leverage Copper.co’s technology to develop and, subject to receipt of regulatory and other approvals, launch an institutional grade digital custody offering where clients can store and settle their digital assets within a secure environment operated by State Street.

About State Street Corporation

State Street Corporation (NYSE: STT) is one of the world's leading providers of financial services to institutional investors including investment servicing, investment management and investment research and trading. With $43.7 trillion in assets under custody and/or administration and $4.1 trillion* in assets under management as of December 31, 2021, State Street operates globally in more than 100 geographic markets and employs approximately 39,000 worldwide. For more information, visit State Street's website at www.statestreet.com."

"Know your enemy, know his sword." Miyamoto Musashi