Our work covers all areas of family law, with particular expertise in the following areas:
Call: 2008
‘Sian has a relaxed style supported by preparedness and excellent legal knowledge. She is a strong advocate in court, direct and passionate about representing clients and children and protecting those at risk.’
The Legal 500 UK Bar 2025
Sian is an experienced barrister, with a practice covering public and private children cases and family finance. She is a highly persuasive and effective advocate. Her clients find her to be a sympathetic advocate, one who understands the importance of building a strong rapport with clients in order to make difficult circumstances feel more tolerable. She has considerable legal knowledge and courtroom skills, which she deploys to achieve the best results for her clients.
Sian was called to the Bar in 2008 and became a tenant at Harcourt Chambers in 2009 after successfully completing her pupillage there.
To instruct Siân or for more information…
Call: 020 7353 6961
Email: clerks@harcourtchambers.co.uk
Sian has extensive experience of representing all parties in public law proceedings, including those assisted by the official solicitor or intermediaries. Her practice covers the whole scope of public law, including highly complex medical cases. Sian has a thorough and pragmatic approach to case management in the early stages and is particularly effective in cross-examination and trial advocacy.
Fact-finding in public law proceedings, regarding allegations of abuse by Father. Found that he had seriously abused the mother, including coercion and sexual abuse.
Fact-finding in care proceedings, in which the mother was found to have fabricated or induced children’s illnesses.
Care proceedings. Judgment considering the position of medical expert who the local authority asserted had been manipulated by the mother.
Sian has represented parents and children in a wide variety of private law cases. She has considerable experience of disputes concerning applications for child arrangements orders, and more specialist areas such as removal of parental responsibility and internal and international relocation. Sian has a reputation for being able to establish a rapport with a wide range of clients, from the very vulnerable to highly successful professionals. Her flexible and adaptable approach enables her to achieve positive outcomes for clients.
Sian Cox represented the mother in complex and lengthy private law proceedings. This judgment follows on from the fact finding judgment [2022] EWFC 124, in which she also appeared and a number of serious findings of coercive and controlling behaviour were made against the father. At the final hearing, Sian was able to secure significant protective orders for the mother, including lengthy s91A, restriction of parental rights, prohibited steps, and non-molestation orders. This case also posed difficult jurisdictional and procedural issues, which arose at a late stage when the father did not return to the UK for the final hearing.
Fact-finding hearing to deal with allegations made by both parties, in the context of Children Act and Family Law Act proceedings.
Sian is qualified to accept instructions directly from members of the public under the Direct Access Scheme in appropriate circumstances.
‘Sian is a fantastic cross-examiner. She is brilliant with the details.’
The Legal 500 UK Bar 2025
"Sian is a dedicated family lawyer and a conscientious, safe pair of hands whoever she is representing."
Solicitor
Andrew Leong, instructed by Reeds, for the children and Sian Cox, instructed by Fort & Co, appeared for the mother in CA, CB and CC (Fact Finding: Coercion and Sexual…
In January 2024 the push for greater transparency in the family justice system continued apace with the rollout of the reporting pilot into several new family court areas. This was…
Nick Goodwin KC leading Sian Cox, instructed by the Joint Legal Team on behalf of the local authority in Re N (Children: Fact Finding – Perplexing Presentation/Fabricated or Induced Illness)…