(Bloomberg) -- London Stock Exchange Group Plc has lost half of its four-person team overseeing exchange-traded funds, just as it prepares to list its first products tied to cryptocurrencies.

Michael Stanley, LSE’s head of exchange-traded products, and business development head Hetal Patel have departed, a spokesperson for the exchange confirmed to Bloomberg without saying when they left. Stanley and Patel didn’t respond to requests for comment.

A batch of exchange-traded notes linked to Bitcoin and Ether are expected to debut on the LSE on May 28, with WisdomTree, 21Shares and Invesco among the approved issuers. Crypto ETPs have been available in Europe for years, but a UK regulatory ban on retail access to crypto derivatives prevented them from being listed in London until the Financial Conduct Authority updated its guidance in March.

Read More: Crypto Exchange-Traded Products Get UK Regulatory Approval

“We are excited by the growth opportunities for our new market for crypto ETNs,” the LSE spokesperson said in an email. 

LSE is seeking a new senior product manager for ETFs, according to a LinkedIn posting. Patel said earlier in a post on the social media platform that she had decided to leave the exchange and would be starting in a new job in late July. 

There are about 1,200 ETFs listed on the LSE, according to data compiled by Bloomberg. 

The departures made it more difficult to get clear feedback from the LSE on technical matters related to applications, said a senior executive at one of the prospective crypto ETP issuers, requesting anonymity to avoid jeopardizing a key business relationship. 

“Our teams of specialists have worked closely with issuers ahead of launch to complete the necessary suitability requirements for each prospective new listed product,” the spokesperson said. The review process for crypto applications is split between the FCA and the LSE, with the regulator approving prospectuses for the bourse to list. 

The UK is entering an increasingly crowded field for crypto ETPs. The US approved its first group of Bitcoin products in January, and they’ve since swelled to oversee some $60 billion in assets — far surpassing the entire European market in size. On Thursday, the Securities and Exchange Commission paved the way for the first US ETFs based on Ether.  

Read more: US Paves Way for Ether ETFs in Test of Demand Beyond Bitcoin

In Hong Kong, Bitcoin and Ether ETFs that started trading in April have been met with relatively tepid demand from investors. 

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