An integrated investment
platform.

Stephen Onikosi is Co-Founder of Castling & Co, where he plays a central role in the operational oversight, systems architecture, and execution framework underpinning the platform's residential investment activities.

With more than two decades of experience across real estate acquisition, asset management, and investment execution, Stephen has developed a reputation for combining analytical rigour with operational discipline in complex and time-sensitive environments. His ability to maintain clarity, structure, and control while operating at pace is fundamental to Castling & Co's capacity to execute consistently across a high-volume opportunity pipeline.

Stephen is responsible for overseeing the operational infrastructure of the platform, ensuring that origination, acquisition, financial control, and asset management functions remain aligned throughout the investment lifecycle. His work includes the development and implementation of systems, processes, and governance frameworks designed to support scalable deployment while preserving execution quality and institutional standards.

A key aspect of Stephen's contribution is his ability to anticipate operational, financial, and strategic implications across transactions and platform-level decisions. His attention to detail and structured approach to execution support Castling & Co's focus on disciplined capital deployment, downside protection, and long-term portfolio performance.

Having operated through multiple market cycles — including the financial crisis, Brexit, inflationary pressures, and the evolving post-pandemic landscape — Stephen brings significant experience navigating periods of market dislocation and uncertainty. This perspective continues to inform Castling & Co's ability to operate effectively in environments where conventional market participants are constrained.

At Castling & Co, Stephen works closely with the broader leadership team to ensure that the platform's investment strategy, operational execution, and growth trajectory remain fully integrated as the business continues to scale.

Nicholas Chancellor-Weale is Chief Acquisition Officer at Castling & Co, responsible for leading the platform's acquisition strategy and execution across the UK residential market.

Nicholas brings a background in real estate investment and development, having been part of the founding team of a London-based property platform that scaled from an early-stage concept to a portfolio of over 1,000 hotel keys across multiple central London assets, achieving a capitalisation in excess of £300 million.

At Castling & Co, Nicholas is central to the identification, underwriting, and execution of acquisitions, ensuring that opportunities are secured at pricing that reflects both market conditions and the structural advantages of the platform's origination model.

Matthew Ikomoni is Chief Origination Officer at Castling & Co, responsible for leading the platform's origination function and overseeing the identification, engagement, and conversion of off-market residential opportunities.

With over 20 years of experience operating across complex and time-sensitive real estate transactions, Matthew plays a central role in ensuring that opportunities sourced through Castling & Co's proprietary data systems are effectively translated into executable transactions.

Matthew specialises in direct engagement with asset owners operating under varying degrees of financial or situational pressure, requiring a measured and considered approach to communication, negotiation, and structuring.

Tina Marie Walters is responsible for the optimisation, income generation, and exit strategy across Castling & Co's residential portfolio, with a particular focus on enhancing asset performance through structured, value-add interventions.

With close to a decade of experience in the UK property sector, Tina has built and managed a diversified portfolio spanning residential assets and commercial-to-residential developments. Her expertise lies in identifying underutilised assets and implementing targeted strategies to unlock both immediate cash flow and long-term capital appreciation.

Tina brings specialist knowledge in serviced accommodation and government-backed supported living models, enabling Castling & Co to selectively transition assets into stable, income-producing positions where appropriate.

Princess Walters plays a central role in Castling & Co's investment process, supporting the identification, underwriting, and execution of acquisition opportunities across the platform.

Her responsibilities include detailed valuation analysis, deal underwriting, and market intelligence, ensuring that each opportunity is rigorously assessed against Castling & Co's investment criteria and risk parameters.

Princess's analytical rigour and organisational oversight are integral to Castling & Co's investment engine, ensuring consistency, precision, and performance across a high-volume, high-velocity acquisition strategy.

Rihab El-Mastour leads Castling & Co's commercial positioning and investor engagement strategy, with responsibility for shaping how the platform interfaces with capital partners, asset owners, and international stakeholders.

Fluent in English, French, and Spanish, and a native Arabic speaker, Rihab brings a distinctly international perspective to the platform. Her academic background includes a Master's degree in Marketing and Commercial Strategies and an MBA in Business Administration and Management.

At Castling & Co, Rihab is responsible for driving deal flow, cultivating strategic relationships, and ensuring that the platform's engagement with both capital and counterparties reflects a consistent, disciplined, and institutionally credible approach.