Checking that the system works is a vital part of ISO 9001:2008. An organization must perform internal audits to check how its quality management system is working. An organization may decide to invite an independent certification body to verify that it is in conformity to the standard, but there is no requirement for this.

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Certificate number: 197063 | Expiry Date: 19 June 2022

ISO 14001:2004 specifies requirements for an environmental management system to enable an organization to develop and implement a policy and objectives which take into account legal requirements and other requirements to which the organization subscribes, and information about significant environmental aspects. It applies to those environmental aspects that the organization identifies as those which it can control and those which it can influence. It does not itself state specific environmental performance criteria.

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Certificate number: 197380 | Expiry Date: 19 June 2022

CHAS Accreditation is ONLY available for contractors or consultants who have been assessed as CHAS Compliant within the last 9 months.
Assessing suppliers health and safety competence is usually a lengthy and time consuming process. Suppliers can sometimes meet one buyer’s Health and Safety standards but not another. Being CHAS approved reduces duplication as suppliers compliance is accepted by all CHAS buyers.

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Valid until: 7 August 2020


Gas Safe Register is the only official gas registration body of gas businesses and engineers in the United Kingdom, Isle of Man and Guernsey. By law all gas businesses must be on the Gas Safe Register.

Registration is only given on the basis of the business having at least one gas safety qualified engineer.
The Register is not a membership body or trade association.

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Registration number: 509390 | Valid until:  January 2021

 A living wage is the minimum income necessary for a worker to meet their basic needs. Needs are defined to include food, housing, and other essential needs such as clothing. The goal of a livingwage is to allow a worker to afford a basic but decent standard of living.

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Greyline are an accredited Living Wage employer. Being a Living Wage employer is a voluntary commitment and it applies to our direct employees and our third party staff.


NICEIC provides assessment and certification services for contractors working across the building services sectors. We assess electricians, renewable energy installers, plumbers and gas and heating engineers.

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Enrolment number: 500781000 | Accredited Certification: 27th January 2010


BM TRADA exists to help make certain that the materials, products and processes that we test, inspect and certify for our customers are always safe, quality, compliant and fit for purpose. BM TRADA is proud to be part of Element, the market leader in Testing, Inspection and Certification services.

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Expiry Date: 16 February 2021


The construction sector has an important role to play in supporting local economies, and many organisations have a desire to work with local suppliers to support the communities in which they operate. We conduct verification checks for all the suppliers on our platform, so procurement teams can be sure that they are working with approved and accredited partners. In turn, local suppliers have access to a much broader range of projects in their area via the Constructionline platform.

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Registration number: 50131 | Expiry Date: 21/12/2020