Mousumi Chowdhury


Mousumi has a very busy practice in immigration and family law and welcomes all instructions within her expertise. She has completed her Public Access training and is happy to take on cases from lay clients in suitable matters. As of January 2020 she has also been a Visiting Lecturer at Westminster University teaching on the subject: Child Protection Law and Policy.


Mousumi is recognised as a determined and client focused advocate who specialises in advice, representation and advocacy in all areas of immigration, asylum, nationality and citizenship, bail, human trafficking, deportation and detention cases. She has acted for clients from a number of countries, including Nigeria, Gambia, Ghana, Bolivia, Turkey, India, Iraq and Cameroon. She is instructed to appear in courts and tribunals at all levels up to and including the Court of Appeal. Mousumi undertakes a range of written work in relation to immigration law and is happy to advise both on paper and by telephone.

Described by one solicitor as ‘an extremely diligent advocate whose attention to detail is exemplary’ Mousumi’s ability to engage judges and opposing counsel in a respectful manner allied with the unwavering and tenacious nature of her advocacy has led to successes both at the First-tier Tribunal and Upper Tribunal Immigration and Asylum Chamber and makes her a clear choice for solicitors in challenging cases. She also has experience of representing the Secretary of State for the Home Department at the First-tier Tribunal. Mousumi is on the Junior Junior Attorney General’s Panel.


Mousumi accepts instructions in all areas of family law, including: financial remedy proceedings, law relating to children and domestic violence. She has a growing practice in care proceedings, specifically representing parents and has a busy practice in private family cases. Solicitors and clients have described Mousumi as well-prepared, articulate and sensitive to the nuances of a case and dedicated to ensuring a matter is resolved with the least number of hearings as possible.

Her previous experience of working with the National Centre of Domestic Violence has meant that she is particularly well-equipped to assist with vulnerable clients.

Civil Litigation:

Mousumi appears in cases involving civil penalties for employing illegal workers. In 2015, Mousumi completed her training as an international civil and commercial mediator.

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2016 LLM Legal Professional Skills, City University. Dissertation title: A critical analysis of the Law Commission’s reliability test for experts in criminal cases in England and Wales

2014 Bar Professional Training Course, City University, Very Competent

2013 LLB Law, Queen Mary University, First Class Honours

Notable Cases

Family and Civil

March 2020: JJ -v- KM: Final hearing in private children proceedings where Mousumi represented the Applicant Father and successfully obtained both direct and overnight contact for him with his children in a case involving multiple allegations of domestic violence, neglect and issues of deportation.

March 2020: OKAO -v- SC: Set Aside Default Judgement Hearing where Mousumi represented the landlord against a lettings agency and successfully managed to get the default judgement set aside by drawing to the Judge’s attention the contractual terms agreed between the parties and how there had been no breach in termination of the contract.

Dec 2019: AZWP -v- DP: FDR where Mousumi represented the Respondent Wife in a case involving assets both in the UK and Portugal and the Applicant Husband had not complied with court directions. Costs were made against the Applicant Husband as a result of his conduct and following Mousumi’s submissions on the matter.

Oct 2019: NP -v- SP: DRA turned final hearing. Mousumi represented the Applicant Father and successfully secured shared overnight and holiday contact for him in relation to his children in a case where Respondent Mother had initially fled to a refuge and made allegations of domestic violence against the Applicant Father which she later retracted.

Sep 2019: RJ -v- SS: Final hearing in a matrimonial finance matter. Mousumi represented the Respondent Husband. Matter settled by consent before the hearing took place.

Aug 2019: SS -v- VS: Non-Molestation final hearing where Mousumi represented the Respondent Husband. The Judge found all of the Applicant Wife’s allegations unfounded and terminated the Non-Molestation order.


Feb 2020: IB -v- SSHD: Mousumi represented the Appellant in hearings at the First-tier Tribunal (there were multiple hearings in this case due to its complexity). The matter concerned a child settlement visa where the Appellant’s parent had been granted entry clearance but she had not been due to the ECO not accepting that ‘sole responsibility’ by the parent had been proved despite the evidence provided. At the last hearing in this matter, the Judge hearing the case allowed the appeal in open court.

Jan 2020: OOO -v- SSHD: This appeal related to the Article 8 family life of an Appellant who was the step-father to a British Citizen child and whether insurmountable obstacles existed in the Appellant’s relationship with his partner continuing if they had to leave the UK. The appeal was allowed in open court.

Nov 2019: PC -v- SSHD: Appeal relating to Article 8 private life for an Appellant who had resided in the UK for nearly 20 years and would face significant obstacles on return to his country of origin. Appeal was allowed.

Oct 2019: AJB -v- SSHD: Human rights appeal concerning an Appellant who had entered the UK on a spouse visa following which there were allegations of domestic violence made. The couple later resumed their relationship and sought to re-instate the Appellant’s leave to remain in the UK. Mousumi successfully argued for this to be allowed on the 10-year route rather than the Appellant leaving the UK and applying from overseas as the SSHD suggested.

Aug 2019: AOE -v- SSHD: Judicial review permission hearing where Mousumi represented the Appellant and obtained permission for her.

Aug 2019: DS -v- SSHD: Error of law hearing at the Upper Tribunal where permission was granted to the Appellant and the matter remitted to the First-tier Tribunal for a new hearing.

June 2019: ANO -v- SSHD: Asylum appeal concerning an Appellant who could not return to her country of origin as she belonged to a PSG and had a personal fear of her ex-partner. Successfully argued that internal relocation and sufficiency of protection not available to the Appellant who came from a small island where majority of inhabitants either knew each other or could be traced easily.

May 2019: SS -v-SSHD: Error of law hearing at the Upper Tribunal where permission was granted in an EEA national case concerning the validity of a proxy marriage.