Leaders in the field

Tonic Construction Ltd is a successful Swindon-based civil engineering and groundwork’s contractor. The company works extensively for a number of national housing companies, management contractors and local authorities in the South West.

Tonic Construction Ltd was established in 1999 and has had sustainable growth every year since. Tony Iles is managing director of Tonic Construction Ltd and has a professional management team around him to whom employs a workforce of 120 skilled operatives and supervisors that conduct themselves in both a personal and professional manner at all times.

Tonic Construction has recently become an employee owned with every employee becoming shareholder in the business adding further dedication to delivering the highest quality of service and looking after our clients.


An efficient, reliable and economic solution to every project.


A passion for excellence, and a safe working environment.


Building the future of construction and civil engineering.

Our core services


  • Foundations (rafts, piling, ring beams, trench fill traditional)
  • Sub-structure blockwork and brickwork
  • Flooring (traditional ground bearing, in situ suspended, block and beam)
  • House drainage (including sustainable drainage systems)
  • Domestic services
  • External works

Civil engineering

  • Infrastructure road, sewers and mains services
  • Culverts and large diameter pipelines
  • Reinforced concrete structures
  • Bridgeworks
  • Pumping stations
  • Attenuation and balancing ponds
  • Pipe-jacking
  • Auger boring
  • Directional drilling
  • Footpaths and cycleways
  • Section 278 works – contracts undertaking

Estate completions

  • Drainage and manhole repairs
  • Highway maintenance and adoption works
  • As built surveys
  • Road and gulley cleaning

Waste management

  • SWMP logistics
  • Site clearance
  • Landfilling
  • Contaminated waste removal
  • Road sweeping

Foundations you can

build on

Latest news

Exciting Times For Tonic

Tonic Construction Ltd has signed over 80% ownership of the company to its employees via an Employee Owned Trust in an exciting move rewarding employees and securing the future of the business "This is a really exciting move for Tonic Construction, enabling us to...

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Hi-Vis takes dumper safety to another level for Tonic

Another great article from Nick Drew and our thanks to him for getting behind this campaign, what we need now is operatives to put pressure on their employers to change their preference when buying or hiring Dumpers, so open cabbed dumpers become a thing of the past,...

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Delivery of JCB Hi-Viz dumpers

Many thanks to Sean, Paul & Rebecca from JCB for the hand over of our brand new JCB Hi-Viz dumpers, the team at JCB have done a fantastic job on producing such a safe dumper in such a short space in time, well done all, these will now join our fleet of BMTS to...

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