The Complete Contractor

Olli Group Accreditations

Olli has achieved a wide range of professional accreditations for its work in various specialisms and to pre-qualify for public and private sector procurement processes. Some of them are listed below.
Acclaim Health & Safety

Issued by CONSTRUCTIONLINE - Launched in 2012, Acclaim Accreditation is the health and safety accreditation service provided by Supplier Assessment Services. They carry out an assessment of Olli’s health and safety documentation and work activities as an independent, competent assurance of the systems we have in place. As an SSIP members scheme, Acclaim Accreditation supports the objectives of SSIP (Safety Schemes In Procurement) to improve health and safety standards across the UK.

Association for Specialist Fire Protection (ASFP)

As the UKs leading trade association relating to ‘Built-In’ fire protection, the ASFP is dedicated to the protection of life, property, the environment and our heritage and promotes continuous improvement in all aspects of passive fire protection.

BASE SOLUTIONS- H&S Certificate of Retention

Our Health and Safety Consultants

BDMA (British Damage Management Association)

The BDMA is the certifying body for damage management professionals, setting standards and providing training and accreditation for practitioners and others across the wider insurance industry who are involved in the recovery and restoration of damaged properties.

BM TRADA- ISO 14001:2015 Environmental Management Systems

BM TRADA is an independent, accredited certification body. They provide UKAS accredited certification to all the major management systems standards. We hold the ISO 9001, ISO 14001 and ISO 45001.

BM TRADA- ISO 45001:2018 Occupational Health and Safety Management Systems

BM TRADA is an independent, accredited certification body. They provide UKAS accredited certification to all the major management systems standards. We hold the ISO 9001, ISO 14001 and ISO 45001.

BM TRADA- ISO 9001:2015 Quality Management System

BM TRADA is an independent, accredited certification body. They provide UKAS accredited certification to all the major management systems standards. We hold the ISO 9001, ISO 14001 and ISO 45001.

British Woodworking Federation (BWF)

The British Woodworking Federation (BWF) is the trade association for the woodworking and joinery manufacturing industry in the UK. Among other things, our joinery department crafts bespoke fire doors.

BWF Fire Door Alliance

The BWF Fire Door Alliance is operated and managed by the British Woodworking Federation (BWF). It is a scheme that champions third-party certification of fire doors and doorsets. Comprising of manufacturers of timber fire doors and fire doorsets, processors, distributors and suppliers of integral components, members share the vision that every fire door or fire doorset sold in the UK meets required standards throughout its service life.

Certified Waste Carrier -Environment Agency

Olli are accredited for an upper tier waste carrier and dealer


The market leader in Testing, Inspection and Certification services. Olli are accredited for *

  • Apertures
  • Glazing of apertures and door frames
  • Door sets/Door Frames and Resizing
Considerate Construction Scheme

The Considerate Constructors Scheme is a not-for-profit, independent organisation founded to raise standards in the construction industry.

Construction sites, companies and suppliers voluntarily register with the Scheme and agree to abide by the Code of Considerate Practice, designed to encourage best practice beyond statutory requirements.
The Scheme’s main areas of concern fall into three categories: the general public, the workforce and the environment.

Construction and Logistics Community Safety (CLOCS)

The CLOCS Standard is a national industry standard that promotes good practice beyond basic legal compliance. It defines the primary requirements placed upon the key stakeholders associated with a construction project and places responsibilities and duties on the regulator, the client, the principal contractor controlling the construction site and the supply chain including the operator of any road-going vehicles servicing that project.

Constructionline Gold

Our Constructionline Gold accreditation allows us to meet the PAS 91 and Common Assessment Standard and pre-qualify across core modules required by Public and Private sector buyers
Manage our PAS 91, Common Assessment Standard and SSIP data via Acclaim Accreditation

Contractors Health and Safety Assessment Scheme (CHAS)

CHAS is an authority and trusted advisor on health and safety compliance, responsible for setting industry benchmarks and providing the new Common Assessment Standards.

Excellence in Community Engagement

London Construction Awards 2023 Finalist


FIRAS is a voluntary, third party certification scheme for installation contractors of both passive and active fire protection systems, operated by Warringtonfire and accredited by UKAS to BS EN ISO/IEC 17065:2012. Olli are accredited for Fire Rated Timber Doors, Fire Door Maintenance and Penetrations

Fire Protection Association (FPA)

The Fire Protection Association (FPA) is the UK's national fire safety organisation. They work to identify the dangers of fire and help to reduce any fire-related risks

Gas Safe

This is the official list of gas engineers who are qualified to work legally on gas appliances. Our Gas Engineers are all registered with the scheme.

Living Wage

The real Living Wage is the only UK wage rate that is voluntarily paid by over 7,000 UK businesses who believe their staff deserve a wage which meets everyday needs - like the weekly shop, or a surprise trip to the dentist. Olli always pay over the living wage threshold.

National House Building Council (NHBC)

NHBC provide independent warranties and insurance for our newly built homes.

National Inspection Council for Electrical Installation Contracting (NICEIC)

NICEIC is one of several organisations which regulates the training and work of electrical enterprises in the UK. NICEIC is one of several providers given Government approval to offer Competent Person Schemes to oversee electrical work within the electrical industry.

Safecontractor (Alcumus)

Safecontractor- "Prove your commitment to safety and ethical practices by displaying the SafeContractor approved seal."
Full PAS 91 Compliance for tendering for work

Triton Damp Proofing

Triton systems- Triton Systems manufactures and supplies products and systems for structural waterproofing (including watertight concrete, cavity drained systems, self adhesive membranes and liquid applied types) ,damp proofing, timber preservation and other building preservation works, for all types of project from domestic works to major commercial projects

UK Fire Association

The UK Fire Association is a trade body offering training and services to companies who offer fire prevention and protection services.

Works Office & Depot
34 Shirley Street
London, E16 1HU

Tel: 020 7474 5111

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 see all our accreditations