The firm, based in Gibraltar, started out as John Licudi and Partners in 1989, was later incorporated as a limited company but now trades as Carduus Ltd. The practise has therefore been established for close to 30 years. Our Professional staff is made up principally of Chartered Quantity Surveyors and Chartered Project Management Surveyors but also includes Building Surveying and Civil Engineering expertise. The range of work we undertake is principally Project Management, Contract Management, Private Practice Quantity Surveying and Contractor Quantity Surveying. We also specialise in Contractual and Legal Construction advice. We mainly work locally in Gibraltar but have an international vocation, having also worked in Spain, North Africa and the Caribbean. Our clients include the Government of Gibraltar, Major Spanish Contractors, Local Contractors, Private Clients, Lawyers and Developers.
Our History
Gibraltar
Gibraltar is a self-governing and self-financing parliamentary democracy within the European Union. A British Overseas Territory, Gibraltar is economically prosperous with a highly-diversified economy including financial services, e-gaming, shipping and tourism. Given its status within the EU, Gibraltar-licensed banks, investment services firms, UCITS, insurance companies, reinsurance companies and insurance mediation firms benefit from access to the single European market and therefore a potential client base of over 500m people.
Gibraltar is promoted as the EU domicile of choice for financial services; including funds, traditional and alternative investment management, insurance companies and private clients (pensions, company management, trusts, banking, emoney and tax residence schemes). Gibraltar offers a well regulated, transparent and internationally-cooperative jurisdiction with access to financial markets including the right to access the EU single market in financial services. Gibraltar offers a modern environment with low personal and corporate tax, high quality infrastructure and a lifestyle that together create a compelling combination.
Key Personnel

Melvyn Ritchie BSc MRICS
Melvyn is the Managing Director of the company. A Chartered Quantity Surveyor with over 30 years experience in the construction industry in UK, Spain and Gibraltar. Areas of experience include: project management , development appraisal and strategic planning, managing cost reporting and engineering systems for projects, negotiating contract amendments, writing bid packages, developing budget estimates, writing scopes of work, and completing project closeout procedures.

Wynne Davies BSc MRICS MAPM
A Chartered Quantity Surveyor with over 30 years experience in the construction industry in UK, Jordan and Gibraltar. Areas of experience include: Project Management, programme management, claims, adjudication, commercial management, risk management, value management.

Dwayne Ballestero BSc (Hons)
A Gibraltarian Honours graduate in Construction Management with over 5 years’ experience in the construction industry in Gibraltar. Areas of experience include: Quantity Surveying, Project Management and Facilities Management all gained in both the private and public sectors. Languages: English & Spanish.

Mark McManus DipQS MRICS
A Chartered Quantity Surveyor with over 30 years experience in construction in the UK and Gibraltar. Areas of experience include: Quantity Surveying, Project management, bank monitoring, construction consultancy, urban regeneration, development cashflow appraisal, life cycle costing, risk management, cost management, procurement and contract advice.

Kim Clarence C.Env FRICS
A Chartered Quantity Surveyor with over 40 years experience in the construction industry in UK, Spain and Gibraltar. Areas of experience include: Project Management, Estimating and Cost Control, International procurement, Preparation of development appraisals particularly for High quality Residential Developments, Estate Management. Languages: English & Spanish.