DEPM – Design, Engineers and Project Managers is a division of Guardian Industrial (UK) Group Ltd.

The design element covers everything from new build houses and industrial units to loft conversions and extensions on existing buildings, as well as restoring historical sites such as Eggbuckland Keep and Drakes Island.

This design work is done by the engineers on the team (civil engineers for below ground works and structural engineers for everything above ground) who work with architects to create the drawings for each project and are also responsible for deciding what materials need to be used in these designs and for getting the jobs priced up.

Our project managers take over when the project goes live and into construction and ensure that everything on site runs smoothly, co-ordinating site managers, sub-contractors and suppliers as well as liaising with clients.

The Team

Meet our highly skilled team at Design Engineers and Project Managers

Billy Dale

MEng (Hons) CEng MCIHT

Billy Dale is the Managing Director of Design Engineers and Project Managers Ltd. He manages all the construction, design and project management activities for the larger business. Billy is a chartered civil engineer whose recent roles include all elements of Design, Project Management, Inspection, Assessment and Reporting for works ranging from 12th Century church towers to modern room in the roof constructions as well as International hub airports and immersed tube tunnels. A keen chilli aficionado, Billy grows his own chillies and reviews them online. He also coaches and plays rugby for his local side with his son.

John Derry


John is the Procurement Director. He has a BSc in Construction management. He is highly skilled and experienced in; Project management, Quantity Surveying, Construction law and Value engineering. John has 30 years of experience in all aspects and methods of construction. He has been a Member of CIOB for 20 years. John is a keen golfer when time permits.

Conor Hastings

BEng (Hons)

Conor recently graduated from Plymouth University with a BEng (Hons) in Civil and Coastal Engineering. He joined the DEPM team as a Graduate Civil & Structural Engineer and is keen to explore as many aspects of the industry as possible. Conor is also a qualified HSE Professional Scuba diver which gives him a good perspective of how difficult the marine environment is to work in. He spends most of his free time in or around the sea, surfing, scuba diving or just being on the beach. When he’s not in the sea Conor spends the rest of his spare time climbing or exploring the beautiful countryside of Cornwall.

Paul Russell


Paul is a Project Manager and has worked in the Construction Industry for over 20 years, starting his career as an apprentice and advancing to gaining Chartered Construction Manager status. With experience of managing projects from Concept (producing a design brief/scope) to Completion (handover including maintenance phase), his knowledge has been enhanced by completing an NVQ level 5 in Construction Management from Edexcel, NEC3 & CDM Training and attending various construction groups and CPD events in Cornwall. He has developed skills covering a range of disciplines such as operations, commercial, project & stakeholder management and health and safety legislation. As a Member of the Chartered Institute of Building he holds himself to high standards and takes pride in ensuring quality is consistently high. Paul’s ultimate career goal is to complete either a technical or business degree and progress to director level. In his spare time Paul is studying a self-funded degree in Innovation, Leadership and Management MSc at the University of York.

Graham Lean

Contract Manager Graham is responsible for overseeing the projects working closely with the project managers and management team as well as leading the Site Managers to ensure projects are keeping to program by driving them forward and ensuring Health and Safety is being adhered to.  He is also responsible for sourcing reliable and established contractors. His background is as a plumber/pipefitter having worked on various projects as well as having his own business.  He became a Site Foreman and then progressed to Site Manager working on a mixture of both house building and refurbishments.  His qualifications include NVQ 6 Diploma in Construction Site Management Building & Civil Engineering, SMSTS, Scaffold Inspection and First Aid at work.  He has also recently become qualified as an NVQ assessor. Outside of work Graham’s interests are Rugby, which, although he no longer plays, he did manage to reach a semi- professional standard by playing for Plymouth Albion 1st team, and as a keen surfer he likes to get out in the Devon and Cornwall surf whenever he can.