Big Ben commercial barristers focus on two sectors: Banking and Financial Services; and Technology. In all cases we are committed to acting independently for the long-term interests of all our clients.

Practice Expertise
Financial Services Regulation compliance advice, including EU law
Contract negotiation, especially complex or high value agreements
Commercial dispute resolution, including International Arbitration
Corporate Taxation relevant to the Financial Services sector

Expertise on UK Corporation Tax, International Tax and VAT :

  • Appeals
  • Defined Benefit Pension Schemes
  • Derivatives
  • E-Commerce
  • EU law
  • Groups of companies
  • International Tax, including BEPS and TP
  • Patent Box
  • R&D expenditure
  • Venture Capital & Private Equity

In addition to advising on UK taxes, Iain Sheridan has experience in advising on not only other common law taxes but also civil law tax codes. Perhaps uniquely so, he is qualified in the tax systems of China (PRC), Hong Kong, Singapore and Australia.

His broader tax knowledge derives from the Revenue Bar Association, the Cambridge University Centre for Tax Law and the Oxford University Centre for Business Taxation.

Sector Expertise

Banking and Financial Services
Over a 18 year period in London, Iain Sheridan has advised or represented the following businesses on regulatory or dispute resolution matters: ABN AMRO, Bank of America Merrill Lynch, Barclays Investment Bank, Deutsche Bank, Fidelity Investments, Fox-Pitt, RBS and Société Générale.

Turning to the Technology sector, Iain Sheridan has advised or represented clients on a variety of contractual or dispute resolution matters that often include intellectual property. He has acted on behalf of, against or alongside Accenture, Bloomberg, IBM, HP Autonomy, Orange Business Services, Intel, Lenovo, Thomson Reuters and Wall Street Systems.


“I met Iain Sheridan in 2009 in Harbin, Heilongjiang province. In addition to precise legal advice, he also developed a practical approach to conducting business in China that I use to this day.”
COO and Co-Founder, UK Hedge Fund