Modern Slavery Statement

Alumasc Building Products T/A Cast Iron Superstore

Our statement¹ is made pursuant to Section 54(1), Part 6 of The Modern Slavery Act 2015 (the Act) and sets out the steps The Alumasc Group plc and its subsidiaries (the “Group” or “Alumasc”) have taken to ensure that slavery and human trafficking is not taking place in our supply chains or in any part of our business.

Introduction

Modern Slavery including all forms of slavery, servitude, compulsory labour and human trafficking is an abhorrent abuse of human rights.

Alumasc is committed to the continuous improvement of our practices to ensure that modern day slavery and human trafficking does not take place in any part of our own business or supply chain.
We expect the same focus from our suppliers, contractors, and business partners.
We are committed to treating anyone working for us with respect.
Our assessment is that the risk of modern slavery in our supply chains is low to medium.

Organisation and Business Model

The Group has three business segments with strong positions and brands in their individual markets: Building Envelope; Water Management; and Housebuilding Products.

We trade mainly through the following subsidiaries: Alumasc Building Products Limited, Aluminium Roofline Products Limited and Elkington Gatic Limited.
Our key trade names and brands include: Alumasc Roofing Systems; Blackdown Green Roofs; Alumasc Water Management Solutions (AWMS); Gatic, Harmer and Slotdrain; Rainclear; Roof-Pro; Skyline; Timloc; Wade; ARP; Mustang Guttering; Legacy; Sentinel; Legion; Trueline; Britannia; Exitus; Colonnade; Mustang; and Alstream.
We are listed on the Alternative Investment Market (AIM) of the London Stock Exchange and have suppliers in the United Kingdom, Europe, the Middle East, North America and Asia.
We hold global patents and brands and sell products worldwide.

Our strategy is to supply environmentally efficient and sustainable building products into the built environment.
Our head office is based in Burton Latimer, Kettering and we have businesses primarily located within the UK, with sales offices in Dubai and Hong Kong that support the UK market and export sales.
We deliver and supply products that are either manufactured in-house or supplied from third parties.
We have a wide range of product categories for building products including housebuilding and construction, roofing, drainage, and water management rainwater products.
Our supply chain structure is managed either from the Group head office or from our divisions: Water Management, Building Envelope or Housebuilding Products.
Information from each of these Divisions has been included as part of the Statement.

Our anti-slavery programme is guided by our commitment to the UN’s Sustainable Development Goals (SDGs) and the leading ones for this statement from our Sustainability programme are:

• Number 11: Sustainable Cities & Communities
• Number 12: Responsible Consumption & Production
• Number 13: Climate Action

Our policies reflect these principles, the OECD Due Diligence Guidance for Responsible Business Conduct and/or the ILO Labour Standards.

Assessing the Risk of Modern Slavery

Our risk assessment is based on the following criteria: supply chain from higher risk countries; products and/or services using low skilled labour, agency or temporary staff; and the ability to review suppliers.
Based on the above, we assess that we have a medium to low risk of modern slavery and human trafficking.

We make and supply goods and have oversight of this process.
Where materials and goods are supplied from overseas, we monitor their performance and regularly review, visit and/or hold videoconference meetings with our suppliers.
We also consider and review suppliers of services within the UK such as security, cleaning, and catering, and providing temporary staff as higher risk areas.

Our risk assessment programme for modern slavery is reviewed twice a year.
Assessments are reported by finance personnel, HR and procurement managers.
Each year Alumasc reviews its policies, training and supplier questionnaires as part of our programme.

Suppliers

We engage reputable suppliers, with whom we foster long-term relationships and who share our values.
New suppliers are risk-assessed and are asked to complete our online and paper compliance questionnaire.
In addition, we have ongoing oversight and review of key suppliers.

As an absolute minimum we expect the following from our supply chain:

• No forced, bonded or child labour
• Rights to free association and bargaining
• Clean, safe and hygienic working conditions
• Working hours compliant with law and standards
• No physical abuse, harassment or intimidation

Supply Chain Overview and Due Diligence Process

The Group already has control processes in place to ensure compliance with statutory regulations, including risk assessments, engagement with suppliers on Group policy, contractual provisions, factory tours and visits.
We also carry out supplier pre-screening where appropriate.
Procurement professionals visit both UK and overseas suppliers.

Risk Factors

The highest risk areas are those involving low skilled workers in high-risk countries.
Risks also arise when a fee is charged for the supply of labour by an agency.

Our People

Recruitment is carried out in line with internal guidance and Right to Work checks are mandatory.
We ensure employees are treated fairly, with respect, and that their fundamental human rights are protected.
Zero-tolerance is shown towards any slavery or forced labour.

Training

We provide online and in-person training to new hires, and refresher training annually or bi-annually to key employees.
Our training covers the Modern Slavery Act, forced labour, child labour, and how to identify risks.
We operate a confidential Employee Whistleblowing telephone line.
The Board confirms that no incidents were reported in the year ended 30 June 2025.

Anti-Modern Slavery Policy

Alumasc has a zero-tolerance approach to modern slavery and human trafficking.
The Anti-Modern Slavery and Human Trafficking Policy complements the Business Ethics, Whistleblowing, and Anti-Bribery & Corruption policies, all available on our website.
Suppliers are expected to adhere to the same standards.

Other Related Policies

• Anti-bribery and Corruption Policy (updated August 2022)
• Whistleblowing Policy (updated August 2022)
• Agents Policy (updated 2025)

Progress in 2025

Updated training and awareness programmes were delivered to new employees and key personnel.
Training covers modern slavery, forced labour, child labour, and signs to watch for.

Performance Measurement

Staff training statistics and ethics questionnaire responses are monitored.
We aim to ensure suppliers support our Modern Slavery Statement and policies.

Risk Assessments

Supplier onboarding processes and temporary labour checks have been strengthened.
Additional assurance questions were added to the new supplier processes.

Approval

This Statement was approved by the Board on 27 November 2025 and signed by Paul Hooper, Chief Executive.

Footnote

¹ This includes all relevant active trading subsidiaries for the 2024/25 financial year under the Modern Slavery Act 2015.