Nii-Amaa is a Senior Associate Solicitor specialising in commercial litigation, property litigation and commercial and strategic judicial reviews. He advises businesses, asset managers, educational institutions, trade unions and private investors on a broad range of disputes, including contractual disputes, property litigation and injunctive relief.
Recognised as a Recommended Lawyer by The Legal 500, Nii-Amaa is described as being “highly responsive and well prepared”. He is known for providing clear, commercially focused advice and developing effective litigation strategies in complex and high-value disputes.
Nii-Amaa has experience acting in the High Court and Court of Appeal and advises clients throughout all stages of the litigation process, from pre-action strategy and interim applications through to trial and appeals.
Cases of note
- Freezing Injunction: Acting for the Defendant in urgent Commercial Court proceedings brought by a major international fashion and lifestyle retailer. Nii-Amaa successfully secured the discharge of the freezing order by demonstrating that the Claimant had failed to comply with its duty of full and frank disclosure. The case involved the jurisdictions of the Netherlands and the UAE.
- Franchise Dispute: Acting for the Claimant in a £9 million commercial dispute concerning contractual payment obligations, resulting in a confidential settlement.
- International Commercial dispute relating to the construction of data centres in Germany and the provision of labour. Involving companies in numerous jurisdictions including Germany, Ireland and the United Kingdom.
- Acting for the landlord in London Trocadero (2015) LLP v Picturehouse Cinemas Ltd [2025] EWHC 1247 (Ch) and subsequent Court of Appeal proceedings. The case concerned a novel and complex point of law relating to the recovery of insurance rent under commercial leases, including the lawfulness of commissions received by landlords in connection with the placement of insurance. The matter raised issues of wider significance for the commercial property sector and ultimately concluded following a confidential settlement.
- Acting for the landlord, London Property Company Limited, in Essendi UK Hotels 2 Limited v London Property Company Limited [2026] EWHC 1354 (TCC) concerning the interaction between the fire safety obligations of the landlord under the Regulatory Reform (Fire Safety) Order 2005 and repairing obligations contained in commercial leases. The matter remains ongoing, with the first instance decision currently under appeal in the Court of Appeal.
- Acting for the tenant (a long-standing Café) at Borough Market Southwark, concerning the renewal of the their lease. The Café is considered an institution to those in the area and Nii-Amaa has managed to secure their continued occupancy at the Market in the short term, with proceedings currently ongoing in the County Court in order to secure their long-term occupancy.
- Acting for the landlord of a high-end residential penthouse property seeking possession. Despite the tenant’s best efforts Nii-Amaa was able to obtain a possession order and permission to expedite enforcement through the High Court. In addition through strategic application the tenant secured an order for an interim payment from the tenant in excess of £70,000, strike out the tenant’s defence to the landlord rent claim and strike out of the defendant’s counterclaim.
Nii-Amaa Ollennu
Senior Associate Solicitor
