WALKER SIME LIMITED - Key Persons


Andrew Hopwood

Job Titles:
  • Principal
  • Project Manager

Andrew McNaghten

Job Titles:
  • Associate Director
Andy from Sheffield joined our team in 2018 as Associate Director. Experienced managing mixed-use construction projects, he's our kind of person. Trusted and much-liked by clients, Andy's an insanely safe pair of hands with an eagle-eye for detail and an enviable track record of success planning and programming the delivery of complex construction projects. He is responsible for our PM team in Yorkshire.

Chris Tildsley

Job Titles:
  • Associate Director
Chris manages our Liverpool QS team, working across all sectors. With over 20 years' experience under his belt and a sky high reputation, his extensive skillset has helped ensure the success of countless projects. A real team player who's always striving for first class delivery, he knows the commercial office, hotels and industrial sectors like the back of his hand, and has also worked extensively in Stadia, Residential, and Ports & Marine.

Dom Gill

Job Titles:
  • Director
  • Director - Infrastructure Services
Dom, Director of our Infrastructure division, has vast experience of complex projects in the Highways, Power, Gas & Oil, and Utilities sector. A Chartered QS with pre and post-contract experience, he's worked with many of the UK's largest clients, specialising in NEC form of contract, project controls and PMO environment. And reassuringly, he's also a Managing Successful Programmes (MSP) Practitioner.

Duncan Firth - Managing Director

Job Titles:
  • Managing Director
Duncan's our MD. Sleeves rolled up and glass half full, he thrives on leading his 80-strong team from the front, inspiring and empowering them to deliver exceptional service and driving growth by making the exceptionally complex run smoothly. A more peoplier person you'll struggle to find! His diverse experience spans SME to multinational, including a Director of Real Estate at Deloitte and a Project Lead on London 2012.

Gavin Garner

Job Titles:
  • Director / Quantity Surveying
Gav joined the Walker Sime team in 2019 as Director of Quantity Surveying. Not only did he bring 20-odd years' construction sector experience with him - having worked on countless landmark projects, many of them seriously complex, across a wide range of sectors - he brought a can-do attitude, a get-on-with-people character, a keen eye for the commercials and a reputation for digging deep to get the job done.

Graham Redfearn

Job Titles:
  • Associate Director
Graham has tons of experience managing multi-disciplinary teams - from inception and feasibility to completion, handover and close out - on schemes spanning logistics, retail, leisure, residential, student accommodation, self-storage and financial sectors. Clients also have him on speed dial for Employer's Agent, Cost Management, Contract Administration, and Project Management support.

Gregory Gordan - CFO

Job Titles:
  • Financial Director
Greg joined us in 2020, bringing over 20 years finance experience with him. Oh, and his framed ACCA and AAT certificates. He's worked across a variety of industries, including Refrigerated Shipping, Facilities Maintenance and Industrials Services, with multinationals, family-owned businesses and SMEs. Greg's a proper people person who's passionate about fair play and helping colleagues develop in their roles, and thrive.

Jon Sime

Job Titles:
  • Client Relations Director
Jon Sime co-founded the business in 1999. Before that he put in a shift for a national PQS outfit, was Commercial Director for a well-respected Contracting firm, and also a Claims Consultant. He also did a stint Down Under, where he first met Dez. Regarded as Walker Sime's Mr Unflappable, Jon takes the strategic lead in our Infrastructure team, helping clients manage risks and maximise returns.

Mark Parker

Job Titles:
  • Director / Project Management
Mark Parker was Walker Sime's first employee. He spread his wings for a while, honing his skills managing multi-disciplined construction projects, from site acquisition to contract completion, and also worked 10 years client-side. But he's back! A rare breed, Mark's a Chartered QS who's equally accomplished as a level-headed, commercially switched-on PM who clients quickly warm to and trust.

Nick Quinn

Job Titles:
  • Associate Director
Nick is one of Walker Sime's talented Associate Directors. He has a strong pedigree in Consulting and his construction sector experience includes over 15 years specialising in the production of Bills of Quantities - so naturally he heads up our dedicated BOQ team. He brings natural leadership qualities to his role managing his team of Quantity Surveyors, along with strong technical expertise and passion for delivering to the highest possible standard.

Nick Wdowczyk

Job Titles:
  • Director
Nick joined the Walker Sime team back in 2008 as an ambitious Trainee Quantity Surveyor. Since then he's grafted his way up to Director, responsible for our Yorkshire QS team's day to-day delivery. Nick has outstanding technical ability and has a likeability factor our clients love. With construction sector experience under his belt including residential, commercial, industrial, transport, education, and healthcare he's also an accomplished Employer's Agent.

Peter Broughton

Job Titles:
  • Associate Director
Peter was a member of the WCP team that became part of the Walker Sime family, following acquisition, in 2019. Joining as Associate Director taking the lead on the design and delivery of a nationwide portfolio of schemes for OnSide Youth Zones, along with a portfolio of leisure, industrial, and commercial projects.

Tammy Harrison-Round

Job Titles:
  • Director / Business Development
A passionate advocate for both diversity and inclusion in our sector, and for investment in emerging talent, Tammy is a Fellow of The Royal Institute of Chartered Surveyors (RICS), with a Masters in Business and Strategic Leadership. With 24 years construction consultancy experience, she's perfectly qualified to lead our biz dev plan. Not only is she a highly experienced QS, Tammy also helps clients navigate procurement pathways, making the potentially complex bewilderingly simple.

Tim Gardner

Job Titles:
  • Associate Director
Tim is a highly experienced and technically accomplished Associate Director, particularly in engineering construction, with extensive worksite experience in the UK and overseas. Well-versed in carrying out pre and post contract services on new build capex projects, brownfield modification projects and term service contracts, he's worked across many sectors including; marine, oil, gas and petrochemical, industrial, commercial, leisure, transport, and utilities.

Tim McGreavy

Job Titles:
  • Associate Director
Tim is a highly experienced, well-connected and ultra-reliable Project Manager whose main focus is healthcare and public sector clients. With a head for managing growth and always ready to lead on strategy, he's got extensive know-how of all things Project and Programme Management within NHS Trusts and with private healthcare providers. Tim's also got a reputation for making sure complex projects hit their critical milestones, with relentless drive and energy, in spades.

Viet Huynh

Job Titles:
  • Senior Quantity Surveyor