Construction Assurance Level 4 Apprentice

  • Company: THAMES WATER UTILITIES LIMITED
  • Location: Isleworth, TW7 7LW
  • Type: Apprenticeship
  • Salary: £22,500.00 per year
  • Sector: Construction and the built environment
  • Ref: NAS-2000029925
  • Application Deadline Date: 19/05/2026
  • Start Date: 01/09/2026
  • Positions Available: 1
  • Working Week: Hours: 36 hours a week across four working days, plus one off-the-job training day. Working hours vary, but are predominantly 7.30am - 3.30pm, Monday - Friday.

Brief Description

Kick‑start your future as a Construction Assurance Apprentice, supporting the UK’s largest water and wastewater provider. You’ll support projects through design, build, commissioning, and aftercare—helping integrate new assets smoothly into day‑to‑day operations. 

Training to be Provided


  • Knowledge, skills and behaviours as set out in the Level 4 Construction Site Supervisor Standard

  • Certificate of Higher Education Construction & Built Environment 

  • Your training includes virtual sessions each week, as well as live seminars and recordings; tasks and learning resources are set on the VLE

Future Prospects

Permanent contract with a 42-month structured programme. 

Vacancy Detail


  • Support construction assurance to meet time, cost, and quality targets

  • Assist with pre‑construction reviews and readiness checks

  • Monitor contractor safety, environmental compliance, and asset standards

  • Help resolve site issues, non‑conformances, and deviations

  • Work with Operations Readiness teams to ensure smooth asset integration

  • Help prepare and review RAMS, TWOSAS, and permits

  • Take part in audits and performance reviews, driving improvement

  • Support planning, lookahead meetings, commissioning, and aftercare

Other Information


  • Drive with own vehicle and business use car insurance will be needed  

  • Please specify on your application which location you are interested in applying for 

Ready to start your adventure?