About

Welcome to HIERON London, where we make spaces with serenity.

In an industry typified by headaches, we’re doing something different. HIERON London provides peace of mind with our area of expertise – the design and build of your space. Whether it’s a family home, a wellness facility or a place of business, we deliver with seamless excellence.

For us, simply executing the end result isn’t enough. It’s absolutely essential that our process is straightforward and stress-free too. We believe that the energy with which you build a space, is the same energy it will carry throughout its existence.

Disruption, chaos, hassle and hiccups – these are the nuisances that we’ve worked hard to eliminate from the HIERON London experience. Your space sets the scene, it’s the foundation for the future, so we make sure it’s built with care, calm and industry leading quality.

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Our team

Jonathan Morris MCIOB

Managing Director

Sophie Harriott

FOUNDING Director

Joe Hacke

Construction Director

Mark Heffernan

Managing Surveyor

Piotr Wasilewski

Financial Controller

Nicola Spreadbury

Office Manager

Alistair Gilkes

SENIOR Site Manager

Peter Jurasko

Site Supervisor

Brandon Morris

Apprentice

Pierre Feffet

Apprentice

Ted Osborn

Junior quantity surveyor

Jonathan Morris

Jonathan Morris

Managing Director

Jonathan is a dedicated and innovative business leader who has achieved success through his hard work, dedication, and commitment to excellence. His ability to inspire others and drive meaningful change is a vital component of the success of HIERON London today. 

With a degree level qualification in construction management and drawing upon his service in the British Army and experience as a former international athlete representing Great Britain, Jonathan has developed a management style that prioritises attention to detail, discipline, and focus. 

Jonathan believes in collaboration, communication, and empowerment of his team. He understands the value of creating a positive work environment where everyone feels valued and inspired to do their best work, which has resulted in a highly motivated and productive team. 

When not at the white board, Jonathan can be found rolling around the dojo with his sons or spending time walking the coastline with his family. 

Sophie Harriott

Sophie Harriott

Operations Director

Sophie is an accomplished Operations Director with over 10 years of experience in commercial and operational roles. With a solid background in project management, business operations, and commercial management, she brings a wealth of expertise to HIERON London.

With a focus on upholding our company values and ensuring a smooth and seamless process for our clients, Sophie is dedicated to implementing efficient systems and processes throughout the company, driving productivity and consistently delivering high-end projects. Her highly organised, motivated, and structured approach ensures that we stay one step ahead of chaos and maintain our commitment to excellence.

In her spare time, Sophie loves cultural activities and adventures, whether it’s hiking in nature or exploring new cities. She believes these experiences feed her creativity and help her approach challenges with fresh perspectives.

Joe Hacke

Joe Hacke

Construction Director

Joe is a distinguished Chartered Civil Engineer (MICE) and Chartered Construction Manager (MCIOB) with 30 years experience in the construction industry, including six internationally. His diverse portfolio specialises in managing complex new builds and refurbishments across residential, hotel, leisure, and commercial sectors, encompassing the entire project lifecycle.

Renowned for his commercial and legal acumen, Joe’s steadfast commitment to health, safety, and environmental best practices, sets him apart as a leader in the field. A dynamic leader, he inspires teams, communicates complex ideas effectively, and achieves exceptional results while staying connected to individuals at every level. His combination of technical expertise, leadership, and community commitment makes him an asset to any organisation.

Outside work, Joe is a board member of The Bulldog Rescue and Rehoming Trust, fostering and caring for English Bulldogs.

Mark Heffernan

Mark Heffernan

Managing Surveyor

Mark has dedicated his entire career to the construction industry, starting from humble beginnings as a labourer on building sites and progressing to managing large-scale residential developments with great success. Having spent the last 20 years in a Tier 1 Main Contracting environment on projects ranging from Education, Commercial, Leisure and Residential. He brings a wealth of experience and knowledge to the HIERON London family.

Mark has particular focus on ensuring good commercial practise across all projects delivered by Hieron providing competitiveness and high-quality outputs to our clients. His focus has been on the introduction of several commercial processes in his drive for efficient working from Pre-Construction through to project delivery and handover.

He has built up a close network of suppliers and contractors and believes in working collaboratively to ensure a seamless journey through the construction process for all.

Mark spends his spare time with his growing young family and is a keen cyclist both recreationally and competitively.

Piotr Waslewski

Piotr Waslewski

Financial Controller

Piotr is a skilled Financial Controller with 20 years of experience managing financial operations, ensuring compliance, and driving fiscal efficiency. Known for expertise in financial reporting, budgeting, and process optimisation, he has successfully led teams to deliver actionable insights and align financial strategies with business goals.

Holding a master’s degree in Management and having spent many years in Big Four accounting firms, he brings technical expertise and a strategic approach to financial management. His experience spans from multinational corporations to various SME companies, where he has implemented cost-saving initiatives and enhanced operational efficiency. Piotr is passionate about mentoring finance teams, upholding ethical standards, and contributing to organisational success.

Outside work, he enjoys planning his next big trip.

Nicole Spreadbury

Nicola Spreadbury

Office Manager

Nicola is an accomplished professional with experience in the professional services and construction sectors, specialising in operational efficiency by streamlining processes and implementing best practices. Throughout her career, Nicola has built a strong reputation for her strategic thinking, exceptional organisational skills, and her ability to deliver projects on time. She is an organised and efficient Office Manager with a proven ability to keep operations running smoothly. With expertise in administrative coordination, training, and office systems management, she ensures that day-to-day activities are handled seamlessly and professionally.

Outside the office, Nicola enjoys singing in a choir, going to the gym and travelling.

Ali Gikes

Alistair Gilkes

Site Manager

Alistair is an experienced and highly skilled Site Manager with a proven track record of delivering construction projects on time, within budget, and to the highest quality standards. With over 15 years of experience in the industry, he has managed a wide range of projects, including new build residential/commercial, high end refurbishments and hotel renovations, showcasing versatility and expertise in overseeing all aspects of site operations.

Alistair excels in team coordination, health and safety compliance, and stakeholder communication. With a hands-on approach and attention to detail, he resolves challenges, fosters collaboration, and ensures project success. Skilled in resource management, scheduling, and cost control, he delivers seamless construction phases. Dedicated to continuous improvement, Alistair stays current with industry trends to achieve exceptional results.

He enjoys spending time with his wife and daughter, playing golf and cricket, cooking for friends and travelling.

Pete Jurasko

Peter Jurasko

Site Supervisor

Peter is a dedicated Assistant Site Manager with over 20 years of experience in the construction industry, specialising in carpentry. Peter excels in coordinating teams, maintaining compliance with safety regulations, and managing day-to-day site activities. 

A hands-on problem solver, he thrives in dynamic environments, addressing challenges with a proactive and detail-oriented approach. His honesty, loyalty, and can-do attitude have made him appreciated and respected figure in his field. 

With a commitment to quality and operational excellence, Peter plays a pivotal role in creating a productive and safe workplace, contributing significantly to the overall success of every project he manages. 

With a lifelong interest in cycling and hiking, he actively participates in these activities to maintain his health and fitness. Additionally, Peter is passionate about aquaristics and takes great pleasure in caring for his tropical fish aquarium. 

Brandon Morris

BRANDON Morris

APPRENTICE

Brandon is an apprentice Design & Build Coordinator with a strong passion for learning and a natural curiosity that drives his work. With years of experience playing football, he has honed leadership, teamwork, and strategic thinking skills that translate seamlessly into his professional life. Known for his inquisitive nature, Brandon approaches every project with a keen eye for detail and a deep understanding of design and construction. As he develops in his career, Brandon’s commitment to excellence and leadership makes him a valuable asset to the HIERON London team.

Outside of work, he stays active practicing Brazilian Jiu-Jitsu, where his discipline and focus continue to shape his personal and professional growth.

Pierre Feffet

Pierre Feffet

Apprentice

Pierre is a motivated Construction Apprentice dedicated to building a strong foundation in the construction industry. Enthusiastic about learning and developing hands-on skills, he is gaining valuable experience in carpentry, masonry and decorating while working on residential and leisure projects. Known for a strong work ethic and a willingness to tackle challenges, he thrives in team environments and is eager to contribute to project success. he is committed to mastering safety protocols, technical knowledge, and practical techniques under the guidance of experienced professionals. With a passion for the trade and a drive for continuous improvement, he aims to grow into a skilled and dependable construction professional.

Outside of work, he enjoys football, boxing, running/gym, listening to science theories and he is an avid cinema enthusiast.

Ted Osborn

Ted Osborn

Junior Quantity Surveyor

Ted is a motivated and detail-oriented Junior Quantity Surveyor with a passion for contributing to the success of construction projects through accurate cost management and effective budgeting.

He has gained valuable experience in contracts and cost reporting across HIERON’s projects as well as handling procurement, supply chains and estimating. He is proficient in cost analysis, preparing tender documents, and assisting in contract administration. HIs keen analytical skills and commitment to precision ensure the delivery of cost-effective solutions without compromising on quality.

Ted works closely with stakeholders to align financial objectives with project goals and his proactive attitude and eagerness to learn make him a valuable asset.

Outside of work, Ted enjoys a number of hobbies and particularly enjoys doing themed long-distance runs with friends, as well slightly shorter runs with his dogs.

Jennifer

Jen-Diez Jones

Senior Architect

Jennifer Diez-Jones is an accomplished Architect with a diverse background spanning prestigious academic institutions and prominent professional experiences. She earned her undergraduate and postgraduate degrees from Liverpool John Moores University and subsequently qualified at the esteemed University of Westminster.

Her career trajectory has showcased her expertise predominantly within the high-end private residential sector in and around London, where she collaborated directly with esteemed estates such as the Portman Estate and Grosvenor Estate on residential refurbishments. Transitioning to the commercial realm, Jennifer has excelled in overseeing office CAT A fitouts from inception to completion in central London.

Jennifer thrives on crafting bespoke solutions that seamlessly blend clients’ needs with innovative design. Beyond her architectural pursuits, Jennifer is an avid gym enthusiast and adventurer. She finds solace in capturing moments through her camera lens and indulges in the art of portrait drawing to unwind.