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William Garner, Partner

William specialises in the financial services sector and heads the firm’s Financial Services Regulation & Funds practice and also the regulatory side of the firm’s FinTech practice



William is head of the firm's Financial Services Regulation & Funds group. He has advised on the structuring and establishment of numerous financial services businesses and investment funds. He also regularly assists clients throughout the UK authorisation process and has particular expertise in advising clients on a wide range of regulatory, trading and markets issues and perimeter issues.

William has a diverse range of clients including exchanges (regulated markets, multilateral trading facilities, organised trading facilities), broker crossing networks and trading platforms, investment banks, brokers, proprietary trading firms and market makers, and investment managers in connection with multiple investment and product classes (including equities, fixed income, funds, commodities, financial derivatives, CFDs, commercial and wholesale FX, and crypto assets). His extensive trading experience enables him to provide legal expertise which is complemented by significant industry insight and an understanding of the practical and commercial realities of running a business involved in financial markets.

As part of the firm's FinTech practice William regularly assists clients in fitting novel and fast moving technological business models into the less dynamic regulatory framework (particularly in relation to payment services and crypto assets).

William is admitted to practise in England and Wales. 


  • Advising investment banks and brokers in relation to providing direct electronic access to execution venues (DMA and sponsored access) and providing white labelled services to third party brokerages
  • Assisting numerous clients setting up European execution venues (MTFs and OTFs) and trading platforms (OTC platforms and crypto currency exchanges)
  • Assisting numerous international brokerages and proprietary trading firms to set up European operations or restructure existing operations
  • Advising numerous clients in connection with alleged FCA or exchange rule breaches

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