Everything we do is underpinned by our British Standards Institute (BSI) ISO 9001, ISO 14001 and OHAS 18001 quality assurance accreditation and PAS2060 Carbon Neutral certification.

BSI is unrivalled in the United Kingdom, in that its able to both certify and maintain these high standards. Each accreditation has its own strict process for ensuring that we’re not only delivering to these standards, but are also adhering to them as government legislation around them change.

In line with our policy of maintaining the qualities that meet the expectations of our clients, we’ve designed a software management system that enables effective monitoring and management of a contract from start to finish.

Installed on the client’s server normally a shared drive in conjunction with the clients IT department, it’s both visually attractive and easy to use. At the click of a mouse all necessary contract data can be viewed in instant. What’s more, the client can choose the data to be displayed and have their company logo on the dials.




ISO 9001 Quality standard
Lewis & Graves gained this prestigious award in 1994. To ensure compliance to the quality system we are audited on a six-monthly basis.

ISO 14001 Environmental accreditation
Lewis & Graves achieved ISO 14001 environmental accreditation in 2009 after working closely with Carbon Footprint Ltd a leading consultancy in sustainability.

ISO 18001 Health & Safety accreditation
Lewis & Graves is pleased to have achieved the standard for environmental accreditation management in 2013.

PAS 2060 certification
As a measure of Lewis & Graves’s commitment to the environment we achieved Carbon Neutral status in 2009. We offset 100% of our carbon usage and meet the requirements of the official standard.

Environmental Agency
Lewis & Graves is committed to ensuring that all our employees follow our environmental policy and adhere to best practice wherever reasonably practicable. We are registered with the Environmental Agency and abide by its waste disposal policy.


Contractors Health & Safety Certification (CHAS)
The awarding body issues a new Health & Safety certificate annually, after an in-depth audit on randomly selected sites. Our H&S policies, procedures and training programme ensure we are complying with H&S legislation at all times.

The Federation of Window Cleaners
This organisation sets the standards and Health & Safety parameters for window cleaning. The federation’s safety handbook forms part of our training régime and a copy is issued to all our window cleaning staff.

British Institute of Cleaning Science (BICSc)
Lewis & Graves is a corporate member of BICSc and hold their nationally recognised CPSS qualification for the cleaning industry. Our membership demonstrates our active and material support to the Institute in its aim to raise environmental standards, through training and education. The Institute audits our training, documentation and task assessments annually to ensure that we are meeting the standard for quality and health & safety.

ESOS 53x53

Energy Saving Opportunity Scheme (ESOS)
We are currently en route to achieving the ESOS accreditation and we hope to have this scheme fully operational by the end of the year.