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

Fieldfisher advise Tonic Construction on employee buyout

Manchester and London-offices assist Swindon-based civil engineering firm on ownership transfer to secure future of the business. Fieldfisher's employee ownership (EO) team has continued its record year for employee buy-outs, most recently advising civil engineering...

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… will be in the eating,” says Tony Iles, Managing Director of Tonic Construction as the company chooses Volvo excavators for the very first time. Breaking with tradition, the Swindon based civil engineering and groundworks contractor has added six new Volvo reduced...

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HSE approved safety features to set a new industry standard

HSE approved safety features to set a new industry standard with the safest dumpers in the UK ready to start work on Tonic Construction sites Tonic Construction have taken delivery of 17 new HSE approved forward-tipping 9 ton dumpers from C&O Construction. The...

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