
A specialist financial services firm, McDonnell Ellis LLP‘s clients range from banks and asset managers to smaller fintechs, payments and crypto firms. Brian McDonnell heads up the practice, drawing on deep regulatory experience to cover the full spectrum of financial services law, including banking, wholesale financial services, funds and payments. David Ellis boasts noted expertise in regulatory capital, client money mandates and funds.
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Accolades
Client satisfaction: Lawyer & team quality
Client satisfaction: Billing & efficiency
Client satisfaction: Sector knowledge
Testimonials
Collated independently by Legal 500 research team.
- ‘Brian McDonnell has been my contact at the firm since I was first introduced to them. Brian has an outstanding background and is very well thought of in the financial services legal sector. I have greatly valued his insights, pragmatism, judgement, and the succinctness of his advice. He doesn't gild the lily, but keeps instructions as simple as possible.'
- ‘From our perspective, Brian McDonnell makes this practice unique in terms of his knowledge/know-how in respect of his financial services expertise and his ability, from a client-facing perspective, to make matters with complexity simply understood and in a very personable manner by clients to whom we refer him from both a factual and legal perspective.’
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Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.

Practice head
Brian McDonnell
Other key lawyers
David Ellis
