Investor Presentation via Investor Meet Company

Haydale plc

("Haydale", the "Company" or the "Group")

Investor Presentation via Investor Meet Company

Haydale (AIM: HAYD), the advanced materials and clean-technology group, today announces that Simon Turek, Chief Executive Officer, and Patrick Carter, Chief Financial Officer, will provide a live presentation relating to the Investor Presentation via Investor Meet Company on 11 March 2026, at 12:00 p.m.

The presentation is open to all existing and potential shareholders. Questions can be submitted pre-event via your Investor Meet Company dashboard up until 10 March 2026, 9:00 a.m., or at any time during the live presentation.

Investors can sign up to Investor Meet Company for free and add to meet Haydale plc via:

https://www.investormeetcompany.com/haydale-plc/register-investor

Investors who already follow Haydale plc on the Investor Meet Company platform will automatically be invited.

For further information

Haydale Plc

Simon Turek, Chief Executive Officer Patrick Carter, Chief Financial Officer Tel: +44 (0) 1269 842946 www.haydale.com

Cavendish Capital Markets Limited (Nominated Adviser & Broker)Julian Blunt / Edward Whiley / Trisyia Jamaludin - Corporate FinanceAndrew Burdis - Corporate BrokingTel: +44 (0) 20 7220 0500

About Haydale

Haydale plc is an advanced materials and clean-technology company focused on the development and deployment of energy- and water-efficient technologies at scale.

The Group leverages its proprietary HDPlas® platform technology to develop patented graphene-enabled products that deliver measurable energy, water and carbon savings. These products are deployed through an integrated commercial model that combines in-house product development with established customer access, delivery capability and Impact Partner relationships.

SaveMoneyCutCarbon is the Group's embedded B2B go-to-market platform, operating a national sales, programme management and installer network. Through its Impact Partner Programme, SMCC originates pre-qualified SME and corporate demand via long-term agreements with UK banks and utilities. This partner-funded acquisition model provides scalable, low-cost customer origination and recurring programme revenue.

Haydale's strategy is focused on accelerating the deployment of cost-effective decarbonisation solutions across the UK's built environment, while building a scalable platform for wider international deployment through strategic partners. The Group is execution-led and product-focused, translating advanced materials science into commercially deployable products and solutions that deliver measurable energy, water and carbon savings.