The Board

The Board of Directors is responsible for running Temporary Works Forum Ltd (TWf) and carrying out the requisite duties required of a limited (not for profit) company.

Tim Lohmann (Chair)

CEng, FICE, FIStructE

Tim Lohmann
Tim was appointed a Director of TWf in June 2013.  He became Chairman at the AGM on 14th June 2017.

Tim is a Director at Wentworth House Partnership.  He has wide experience of the development of temporary works schemes in congested and complicated sites. He has similar experience of ground engineering techniques.

David Thomas (Secretary)


David Thomas Portrait HPC

David was appointed a Director of TWf in September 2014.  He is also Company Secretary.

David is a Chartered Civil Engineer and a Chartered Safety and Health Practitioner.  He is the Director of Heightsayfe Ltd. (  Previous posts include that of SHE Director at William Hare Ltd. - a global leader in engineered steel solutions – and HM Principal Specialist Inspector of Health and Safety (Construction) at the Health and Safety Executive (HSE, 1997 to 2007).

In a broad career to date he has held a number of positions in different organisations: multi-disciplinary engineering and management consultancy; health and safety enforcement (in support of criminal proceedings and as a technical specialist); health and safety management (in construction and manufacturing); and the design of equipment, training and support services for professional work at height and rescue.

Roles have ranged from that of designer, site engineer, project manager, safety advisor, specialist inspector, safety health and environment director and, presently, company director.  These positions have been within large and small organisations, both private and public sector.

Whilst at the HSE, David commissioned a number of research projects, including Friction in temporary works (HSE Research Report 071) and Investigation into aspects of falsework (Contract Research Report 394/2001), both undertaken by Birmingham University.

He was lead author for Safe erection, use and dismantling of falsework, HSE Construction Information Sheet No. 56, and Chairman of the CIRIA Steering Group that prepared Facade retention – Best practice guide (Report RP626), Retention of masonry facades – best practice guide (Report C579) and Retention of masonry facades – best practice site handbook (Report C589).

David was a project group member for Permanent formwork in construction (Report C558, CIRIA), Checklist for the safe erection and dismantling of falsework (CS123, 1999 Concrete Society) and Checklist for the assembly, use and striking of formwork (CS144, 2002, Concrete Society).

He is chairman of BSI Technical Committee PH/5, Personal fall protection, has been awarded individual life membership of IRATA International and was a member of the Editorial Board for Safety and Health Practitioner (2014).

Ben Beaumont (Vice Chair)

BEng(Hons), CEng, MICE

Ben is a Chartered Civil Engineer (CEng) and member of the Institution of Civil Engineers (MICE). He has been a member of the Temporary Works Forum (TWf) since 2010 and in August 2014 he was appointed as a TWf Director.

Ben was convenor and co-author of the TWf guidance 'Effective Management of Scaffolding to BS 5975: 2019' that was published in September 2020.

He is the founder and Managing Director of 48.3 and a Director of Richter. 48.3 is a class-leading consultancy, operating from head office in Redhill, Surrey. Richter is an industry-leading civil, structural and geotechnical consultancy specialising in temporary works. Richter and 48.3 engineer value together - and have offices in Central London, Marlow, Bedford, Exeter, Birmingham, Leeds, Warrington, Gateshead & Glasgow.

Ben started his career in civil engineering designing temporary works at Alwyn Richards Ltd. He then developed and managed a successful design team at Tone Scaffolding in London. In May 2010 he founded 48.3. In 2019, 48.3 merged with Richter and Ben joined the board of Richter and now leads Richter operations in the southeast from its office in Redhill.

Between January 2016 and August 2020 he was a member of the NASC Technical Committee. In 2019 he was appointed to the EDF Temporary Works Steering Group for Hinkley Point C, responsible for leading and developing the temporary works strategy for the project.

Steve Hesketh

CEng, FICE, MIStructE 

Steve Hesketh
Representing MGF, Steve was a founding member of the TWf. He was appointed a TWf Director in December 2017.  Since 2005, he has been focussed on excavation temporary works design and manufacture in his role as Engineering Director at MGF.

Prior to this, Steve spent 20 years working in design and management for major civil engineering contractors and consultants.  He is Chairman of the Construction Plant-hire Association’s (CPA) Shoring Technology Interest Group (STIG), a BSI committee member (B/514/29, Trench support systems) and a Member of the University of Salford Civil Engineering Industrial Advisory Board.

Malachy Ryan

BEng, MSc, CEng, MICE


Malachy was appointed a Director of TWf in June 2019.  He began his career at AWD as a Design Engineer in 2009, after an initial career in permanent building design. He became a chartered member of the Institution of Civil Engineers in 2014. In May 2015, Malachy became Managing Director and owner of AWD, overseeing the recent expansion of the company.

In his time with AWD, Malachy has built extensive experience in all aspects of temporary works, access engineering and structural design, leading some of AWD’s most iconic projects, such as V&A Dundee, the West Gate Bridge in Melbourne, and the Abu Dhabi Grand Prix.

Malachy is a member of the BSI Technical Committee for Aluminium, acting as a standard-setter for our industry. He is also a STEM ambassador, leading STEM education initiatives within Ayrshire, and is an active member of the UK Temporary Works Forum, as well as the organiser of the first meeting of TWf Middle East. Malachy is also a Supervising Civil Engineer, accredited by the ICE to mentor engineers from graduate level through to qualification as Chartered Engineers.

Jim Tod


Jim Tod Portrait

Jim was appointed a Director of the TWf in December 2019.

Jim is a Chartered Civil Engineer working for Tony Gee and Partners in their Manchester office as their Temporary Works Director, Group Specialist and Designated Individual

He has 40 years’ experience of solving complex engineering problems during the construction of civil engineering works, 13 years of which has been with specialist jacking and temporary works contractors.

Projects include bridge launches, slides, flotation; bridge jacking for pier demolition and bearing replacement; emergency response schemes for bridge support to damaged and failing structures; facade retention; major needling and propping; heavy moving and lifting; cofferdams; earthworks; foundations; demolition methodology and other more usual forms of temporary works.

Siu Mun LI


Siu is a Civil Engineer with over 22 years’ experience in the construction industry and has worked on some of the most prestigious projects in the UK including CTRL (HS1) Phases 1 & 2, Stratford Olympic Park Bridges, Crossrail and iconic high-rise structures shaping the London skyline such as 100 Bishopsgate & 22 Bishopsgate.

She is now responsible for the overall management of temporary works across all Multiplex Construction Europe projects which includes strict adherence to BS 5975: 2019, problem solving, innovation, upskilling and increasing TW general awareness across the business and within the industry.

Siu started her career with Morgan Sindall as a graduate Site Engineer delivering major rail infrastructure and has first-hand experience in planning and managing high rise construction, bridge slides, bridge launching, balanced cantilever construction, slipforming & jumpforming, flying shores and other propping systems, internal & external climbing cranes and many other bespoke high risk TW schemes. The hands-on technical knowledge and skills gained over the years has ensured her experience as an engineer is as multi-faceted as possible which allows the proposal of creative solutions when facing challenges whilst also being mindful of not over-complicating them.

Siu is extremely passionate about women in construction and future talent within the engineering industry providing mentoring and coaching to many. She is an active STEM ambassador regularly working with schools, colleges, universities and STEAM hubs to spread construction and engineering awareness and has also been nominated by her peers as a UK Construction Week Role Model for the past 3 years, been Highly Commended for Most Inspiring Role Model for the Inspire Awards 2021 and a finalist for Best Female Mentor and Mentor of the Year in other construction industry awards.

Siu was appointed a TWf Director at its AGM on 9th June 2021 and is now very much looking forward to working with the TWf and sharing her depth of skills, knowledge and experience with the wider industry to improve temporary works awareness.

Rob Millard


Rob Millard
Robert is a Chartered Engineer with the Institution of Civil Engineers.  He has a BEng (Hons) in Civil Engineering and an MSc in Project Management.  He joined Swanton in 2014, as an Associate (and was made Director in 2015), after gaining varied construction experience which started in 1997 during a sandwich placement during his studies.

Robert’s experience is varied and covers demolition, rail depot and rail infrastructure works, airport infrastructure, structures and large earthworks/remediation works along with heavy civils construction and design management. 

Robert has assisted with the continued review and refreshing of the CITB TWC and TWS course material and question-banks and was part of the working group that developed and introduced the CITB Temporary Works General Awareness Course. 

Still heavily involved in the delivery and continued development of temporary works training, Robert hopes his increased involvement as a board director of the Temporary Works Forum will enable expanding and growing of the ethos of the TWf across the industry. 

Robert is a visiting lecturer at City, University of London, for their MSc in Temporary Works and Construction Method Engineering; presenting on ‘Competency, training and qualification: The role of the TWC and managing methods to avoid collapse’.

Jemma Quin


Jemma Quin
Jemma was appointed in June 2020.

Jemma is currently working as a Temporary Works Advisor for Kier where she helps raise the competence of temporary works staff across Kier Scotland; and as a Temporary Works Coordinator on the HS2 project for EKFB. She hopes that by joining the board she can raise the competence of people throughout the industry as well as in-house.

Her experience is wide ranging having worked in airports, the water industry, electrical substations, tunnelling and the rail Industry up and down the country. Highlights have included working on the Edinburgh to Glasgow Improvement Project as a Temporary Works Co-ordinator for Morgan Sindall, Temporary Works Design Manager on the Network Rail CP6 framework for BAM Nuttall and Temporary Works Coordinator on the HS2 project for EKFB.

Ashley Daniels


Ashley was appointed a Director of the TWf in June 2019. 

Ashley has 13 years’ experience in major projects and is now appointed as the Head of Temporary Works & Lifting on the Hinkley Point C project, with a construction cost of £19.6bn to £20.3bn.

Prior to this, Ashley has held Senior Temporary Works/ Manger positions on a number of prestige projects such as Olympic Park 2012, Crossrail & Urenco TMF.

Ashley is also the Co- Founder and Manging Director of Temptag Ltd.  Temptag is a specialist temporary works organisation that supports clients to develop robust processes that ensure compliance with BS5975, provides clients industry leading temporary works software, manage and coordinate temporary works and has the capacity to undertake construction work packages.

With a clear desire to change the current gender imbalance in the construction industry Ashley has recently become a WIN Ambassador (Women in Nuclear UK) and is positively making a change within the targeted areas.