Big Ben Law focuses 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 under English law and EU law

Technology contract drafting and negotiation under English law and EU law

Corporate Taxation relevant to the Financial Services and Technology sectors

Expertise on UK Corporation Tax, International Tax and VAT:

  • 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 Corporation Tax, 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.

Sector Expertise

Financial Services
Over a 20 year period in London, Iain Sheridan has advised or represented the following businesses on contract negotiation or regulatory matters: ABN AMRO, Bank of America, Barclays, Deutsche Bank, Fidelity Investments, Fox-Pitt, RBS, Société Générale, TP ICAP and Tradeweb.

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, Verizon and Wall Street Systems.


“Iain Sheridan is an excellent advocate and a sound lawyer – somewhat rare in my experience.”
Leading QC and Judge called in 1972