Sylvia began pupillage at Three Raymond Buildings in October 2025. Thus far, she has been supervised by Ailsa Williamson and Matthew Butt KC.
During first six, Sylvia gained experience assisting on a number of judicial review cases. She has assisted with drafting documents including pre-action correspondence and summary grounds of defence.
Sylvia has assisted with work on multiple inquests, including Article 2 inquests. She has assisted with drafting submissions to the Coroner for Prevention of Future Deaths Reports.
Sylvia has gained experience assisting with cases before police misconduct tribunals throughout first six. She been involved with the drafting of Regulation 31 notices and grounds of appeal before the Police Appeals Tribunal.
Sylvia has been involved in licencing hearings and appeals.
During first six, Sylvia has been involved with cases appearing before the Magistrates’ Court, the Crown Court and the Court of Appeal. She has assisted with the drafting of defence statements, sentencing notes, appellant and respondent’s notices and skeleton arguments.
She has assisted with research on matters of national security.
Sylvia completed the ICCA “Children in Conflict with the Law” training in November 2025.
During first six Sylvia has gained experience assisting with cases appearing before the High Court.
Sylvia has recently been assisting the Chief Justice of the British Indian Ocean Territory in the ongoing case of R v His Majesty’s Commissioner for the British Indian Ocean Territory.
Awards and Scholarships
Sylvia is a trustee and musical director of Sing Inside, a charity that delivers singing workshops inside prisons.
I, Sylvia Cullen, am a data controller and can be contacted at 3 Raymond Buildings, Gray’s Inn, London WC1R 5BH or by telephone on 020 7400 6400 or by email at sylvia.cullen@3rblaw.com. My Data Protection Policy can be found here.
All personal data that I process is for the purposes of providing legal services, conducting conflict-checks, marketing, defending potential complaints, legal proceedings or fee disputes, keeping anti-money laundering records, training other barristers and pupils and when providing work-shadowing opportunities, and/or exercising a right to a lien. The types of data I process vary upon the nature of the legal matter in relation to which I am engaged to advise, but can include names, contact details, biographic details and ‘special category personal data’ (such as details of racial or ethnic origin, political opinions, religious or philosophical beliefs, health, sex life and criminal convictions and proceedings).
Depending upon the circumstances of the case, the legal bases upon which I process personal data are (i) the performance of a contract to which the data subject is a party or in order to take steps at the request of the data subject prior to entering into a contract, (ii) the processing is necessary to comply with legal obligations to which I am subject, or (iii) the processing is necessary for the legitimate interests set out above, except where such interests are overridden by the interests or fundamental rights and freedoms of the data subjects which require protection of personal data, in particular where the data subject is a child. When I rely on (iii) legitimate interests, my ‘Legitimate Interests Assessment’ can be found here. When I process data which has not been obtained directly from the data subject (e.g. personal data contained in evidential materials), it will have been supplied to me as part of my instructions in circumstances covered by legal professional privilege.
Depending upon the circumstances of the case, I may share the personal data with:
I retain personal data for no longer than 7 years after the case has come to an end or as otherwise required by law.
I do not intend to transfer data to any country which is not either within the European Union, or otherwise permitted by UK data protection legislation.
Under the UK GDPR, data subjects whose personal data I process have the right to request from me access to, and rectification or erasure of, their personal data, the right to the restriction of processing concerning them, the right to object to processing as well as the right to data portability. Data subjects also have the right to lodge a complaint with the Information Commissioner’s Office (ico.org.uk).
In cases where there is a contract between me and the data subject, the provision of personal data is a contractual requirement and the data subject is obliged to provide the personal data in order that I can supply legal services. A failure to provide such data may mean that I will not be able to provide those legal services.
Rev 2.1 01.04.2026
| Address | 3 Raymond Buildings, Gray’s Inn, London WC1R 5BH |
|---|---|
| DX | 237 LDE |
| Opening hours | 08:30 – 18:30 |
| Telephone | +44 (0)20 7400 6400 |
|---|---|
| clerks@3rblaw.com | |
| Senior clerk | Sylvia Cullen |
