Ms Dianne Cowie > Duncan Lewis Solicitors > Croydon, England > Lawyer Profile

Duncan Lewis Solicitors

Work Department



Director of Housing, Dianne Cowie specialises in landlord and tenant matters, helping tenants and leaseholders ensure repairs are carried out to their properties and when possible, obtaining compensation for clients affected by disrepair. She has expertise in disrepair, injunction and committal proceedings, homelessness appeals, and judicial reviews. She also advises on rent arrears, and breaches of tenancy.

Dianne has particular expertise in possession matters notably those involving allegations of anti-social behaviour, often in respect of vulnerable clients. She has extensive experience handling cases that have been decided in the Administrative Court, Court of Appeal and the Supreme Court.

She is recognised as an “excellent litigator” and her expertise have resulted in her involvement in reported cases.

Notable cases include representing a vulnerable tenant in both a possession matter as well as a subsequent homelessness matter. Successfully settling the complex possession matter clearing arrears of £10,000 and thereafter ensuring that a duty to house was accepted by the local authority by appealing their decision not to accept this on the basis of not eligible due to status.

Her team runs weekly pro bono clinics for Citizens Advice Merton and Lambeth, and she has also provided training in relation to homelessness and possession matters to the Citizens Advice volunteers/advisors.


Dianne worked at several firms before joining Duncan Lewis in 2015 as a partner-level director in the Croydon branch. She has previous experience practicing family law and civil litigation. 


Dianne studied her Bachelor of Laws (Hons) (LLB) at Nottingham Trent University and gained her LPC from the College of Law, London.

Lawyer Rankings

South East > Real estate > Social housing

Acting for both tenants and landlords in a range of social housing claims, cases of disrepair, and unlawful evictions, the Duncan Lewis Solicitors housing practice demonstrates ‘excellent knowledge of the law’. With extensive experience of representing clients in the Court of Appeal and High Court, property litigation department head Manjinder Kaur Atwal brings extensive expertise in complex judicial review matters and possession disputes to her role. Dianne Cowie handles injunction and committal proceedings, while Bernadette Chikwe specialises in all aspects of housing litigation. Daljit Singh deals with applications for eviction, and Vincent Davis focuses on homelessness reviews and appeals. Zuhal Saglam Bas is another key team member. All named practitioners are based in Harrow.

London > Real estate > Social housing: tenant

Duncan Lewis Solicitors offers representation across the full range of social housing matters, and the team is co-led by Bernadette Chikwe, who specialises in housing litigation and landlord and tenant housing matters, alongside Manjinder Kaur Atwal and Dianne Cowie. The social housing team handles cases related to possession and homelessness, disrepair, succession, unlawful evictions, and neighbourhood disputes. Associate Zuhal Saglam Bas is taking a lead role on neighbourhood disputes and litigation cases. The practice has developed an expertise in handling Equality Act defence cases, and a public law specialism representing both landlords and tenants in disputes, appeals, and judicial reviews. Chikwe regularly appears at the Central London County Court, along with Cowie, who also has experience at the High Court and the Supreme Court. Daljit Singh also handles a range of both contentious and non-contentious matters, from homelessness appeals in the County Court to claims for judicial review. The team has experience working with vulnerable clients, such as those with mental health conditions, terminal illnesses, or learning difficulties, and receives referrals from community organisations, domestic violence units, prisons, and detention centres.