ISO 9001

The international standard for a quality management system. Awarded for consistently providing services that meet customer/regulatory requirements and demonstrating continuous improvement. Certificate Number 16850


The Gas Industry Registration Scheme is for contractors who elect to be assessed for accreditation, for work associated with the construction of new gas infrastructure up to 7 bar pressure.

Achilles UVDB Verify

Achilles UVDB Verify is an independent audit of an organisation’s Safety, Health, Environment, Quality (SHEQ) management systems and Corporate Social Responsibility (CSR).

ISO 14001

The international standard for an environmental management system. Awarded for enhancement of environmental performance, fulfilment of compliance obligations and environmental objectives.Certificate Number 16850

Gas Safe

Gas Safe Register, formerly CORGI, is the official list of gas businesses who are registered to work safely and legally on gas appliances and utilities. By law all gas engineers must be on the Gas Safe Register.

Constructionline Gold

The Constructionline Gold accreditation demonstrates that Green Frog Utilities has been subjected to the highest level of scrutiny around governance and risk management.

ISO 45001

The international standard for occupational health and safety management systems. Awarded to companies that have implemented and maintained an OH&S management system to eliminate hazards and risk.
Certificate Number 16850

SPAA Meter Asset Manager

As an SPAA meter asset manager (MAM), we carry out installation, commission, maintenance, and removal of gas supply meters for the UK industrial and commercial sector.