SQS excavation & reinstatement solutions
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Complete Utility Solutions

In response to the changing structures within the utilities sector we have, over recent years, expanded our capabilities to offer greater cost efficiency, increased flexibility and reduced risks to our clients. SQS can now offer a complete utility solution to meet many client needs on a ‘turnkey’ basis.

Our capability to take on responsibility for the project management, excavation and repair elements of utility works in addition to our core backfilling and reinstatement activity brings multiple benefits for clients. Interfaces and hand-offs are decreased, disputes minimised and costs reduced.

Case Study: UK Power Networks

SQS have worked with UKPN for 20 years+ including reinstatement and turnkey projects on the LPN, SPN and EPN contracts. Acting as a tier one contractor we are responsible for backfilling and reinstating multiple workstreams including:

  • Link box Programme
  • Small services
  • Major connections projects
  • Faults and Network Maintenance
  • Section 81’s

We currently undertake around 300 reinstatements per day across the South East. We also manage customer notification and satisfaction, planning, auditing, and permitting directly into Street Manager.

Case Study: Thames Water

SQS are the approved reinstatement contractor for South London on the R+M and Developer services workstreams. We currently completing 2000 reinstatements.

SQS are also supporting Thames Water achieve their leakage targets in South London by providing a turnkey service with our own Engineering Teams, including:

  • Enabling of works
  • Planning
  • Permitting
  • Excavation and repair

Case Study: Cadet Gas

SQS are currently in a 5-year framework with Cadent to deliver gas mains and service replacement activities across 2 of their 4 networks (East Anglia and North London). Activities undertaken by SQS within this contract are:

  • Delivered 90km of mains replacement in year 1, along with the associated services (circa 9,500)
  • Year 2 delivery expected to be circa 80km of mains replacement and approx. 9,000 services
  • There are currently 16 site-based engineering teams engaged on the contract, along with adequate reinstatement resource to ensure backfill, reinstatement and site clearance is completed within 2 days of engineering completion
  • As part of a Training Initiative with Cadent/Morrison, we have 4 adult trainees’ currently on the area, with more planned

Case Study: Vorbose Telecoms

SQS successfully installed chambers on all the major road networks in London Zone 1 and 2; high profile locations with specific demands and challenges.
The service included:

  • Survey/ Enable each identified location
  • Confirm buildability
  • Liaise with local authority regarding road access and road/ footway occupancy
  • On site communication with local business owners, residents and individuals impacted
  • Permitting
  • Arrange TM and bay suspensions
  • Excavate and install asset
  • Backfill and reinstate all specialist materials
  • Clear site and jet wash
  • Work stop and registration

Case Study: Affinity Water DS

SQS successfully completed all new service connections on behalf of Affinity Water <63mm Supplies achieving 100% Customer Metric scores. This involved:

  • Survey each prospective client and meet them to discuss their needs
  • Prepare a quote for works to be carried out
  • Liaise with local authority regarding road access and road/ footway occupancy
  • Manage the pro-active customer communication process from start to end
  • Permitting
  • Arrange TM and bay suspensions
  • Excavate and install asset
  • Backfill and reinstate all specialist materials
  • Clear site and jet wash
  • Close works on client system capturing critical meter data
  • Work stop and registration

  • Complete Utility Solutions
  • Ontrack
  • Partnering & Alliancing
  • Quality Recycling Solutions
  • Quality Surfacing
  • Street Works Department

Contact Us

Customer Contact Line
customercare@sqsltd.co.uk
0333 240 0201

Recruitment & HR
recruitment@sqsltd.co.uk
020 8166 9210

Office Opening Hours:
Mo-Fr: 08:00-17:00
Sa-Su: Closed

Latest News

  • Mental Health & SafetyOctober 8, 2026 - 11:26 am
  • We’re Hiring: Join Our Team!September 9, 2026 - 10:21 am
  • A Proud Milestone for Our Business – RoSPA 2026 AwardsJuly 13, 2026 - 9:26 am
  • Football Shirt Day – World Cup CelebrationsJune 22, 2026 - 3:21 pm
  • Easter in the CommunityApril 9, 2026 - 2:05 pm
  • SQS wins the Presidents AwardApril 7, 2026 - 10:14 am

Company Details

Stanmore Quality Services Ltd (SQS)
Head Office & Main Depot:
Scratchwood Quarry, London Gateway Service Area, M1 Motorway, London, NW7 3BP

Find us using what3words: stone.glow.ship

Find us on Google Maps: Scratchwood Quarry

Customer Contact Line: 0333 240 0201
Email: customercare@sqsltd.co.uk

Registered Office: 20 Peterborough Road, Harrow, Middlesex, HA1 2BQ

Company No: 03238593
VAT No: 309 9615 76

Accreditations

Awards

Copyright © 2026 Stanmore Quality Services Ltd
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