Sebastian Purnell > Chambers of Andrew Burns KC > London, England > Lawyer Profile

Chambers of Andrew Burns KC


Sebastian Purnell specialises in all areas of employment and discrimination law (both claimant and respondent), tax law (both HMRC and taxpayer), sports law and general commercial litigation. He regularly appears in high-value multi-day hearings in the Employment Tribunal and the First-tier Tax Tribunal, and has also appeared in the EAT, Upper Tribunal, High Court and Court of Appeal.  He acts for a wide range of public and private sector clients which includes FTSE 100 companies, banks and risk management companies, insurance companies, energy suppliers, telecoms providers, freight and infrastructure companies, high street chains, universities and charities.

For more information on Sebastian’s practice and latest case highlights, please visit his full Devereux profile


Junior Counsel to the Attorney General (C Panel). Research analyst, Mckinsey & Company; Paralegal in Competition, EU and Trade department, Berwin Leighton Paisner;  Secondee in Litigation Department, Fasken Martineau, Toronto; called 2010; Middle Temple; (Fox Scholar).


Italian (fluent), Spanish (conversational).




BA (Hons), Modern Languages (First Class).

Lawyer Rankings

London Bar > Sport

(Leading Juniors)Ranked: Tier 4

Sebastian PurnellDevereux ‘Advice delivered in a clear straightforward and personable manner and very client focused.’

London Bar > Employment

(Leading Juniors)Ranked: Tier 4

Sebastian PurnellDevereuxWorks incredibly hard, and very quickly gets to grips with the brief. He is skilled at handling difficult claimants; has a highly effective cross-examination style; and is excellent at explaining the issues in cases to clients and witnesses, speaking to them in clear, easy-to-understand terms. He commits himself fully to a case and fights the client’s corner in an effective and appropriate way.

London Bar > Tax: VAT and excise

(Leading Juniors)Ranked: Tier 3

Sebastian Purnell Devereux

London Bar > Tax: corporate

Devereux is a ‘formidably strong tax set’, with a broad practice which makes them a popular choice for HMRC. Timothy Brennan KC has experience in all areas of corporate tax, in addition to his employment law credentials. ‘Thorough, incisiveFelicity Cullen KC has a practice which includes both advisory and contentious work, and is particularly active for private individuals and owner managed businesses. Akash Nawbatt KC, who is described as ‘commercial and thorough and highly collaborative’, regularly represents HMRC, as in the highly publicised HMRC v Professional Game Match Officials Ltd, where he led Sebastian Purnell in a matter concerning the correct tax treatment of professional football referees. Aparna Nathan KC has a high profile litigation practice, and has been active for HMRC on multiple matters in the last year. Christopher Stone is building a taxpayer-focused practice, and appeared as sole advocate for HMRC in the Supreme Court in R (Haworth) v HMRC, in which the taxpayer was challenging the lawfulness of a follower notice.