Thomson Reuters names eight Keystone Law partners in its Stand-out Lawyers Guide 2026
Andrea James, Andrew Darwin & Anna McKibbin
Siobhan is a commercial lawyer specialising in working with businesses that provide, receive or play a role in delivering niche payment solutions. She advises clients on strategy, new product structure, business expansion, formulating procedures, regulatory conundrums and contracts (B2B and B2C).
Siobhan’s practice has a particular focus on the e-money and payment services sector, assisting fintech companies, retailers, mobile phone operators, financial institutions, e-money issuers, payment service providers, programme managers and resellers. She also liaises with regulators and government bodies on matters impacting the payment service sector.
Siobhan speaks regularly at international conferences on matters relating to e-money and payment sector.
Siobhan supports e-money and payment service providers on multinational gift card and payment programmes, customer-facing documentation, and FCA applications, offering strategic advice on cross-border compliance and innovative payment models.
Experience
Siobhan drafts and negotiates key partner, outsourcing, and intercompany agreements, with expertise in commercial contracts for FinTechs and payment providers, including terms for customer-facing platforms and global product rollouts.
Experience
Siobhan advises financial services clients on FCA EMI and PI applications, LNE and Change of Control notifications, and multi-country legal due diligence, particularly across FinTech and regulatory compliance matters.
Experience
Please note: The experience list above may include examples of work completed prior to joining Keystone Law.
Board Member, Executive Committee, Gift Card and Voucher Association (GCVA)
Director, Prepaid International Forum (PIF)
Siobhan qualified as a solicitor in 2002. Prior to joining Keystone Law in 2021, she worked at the following firms: