Cost of Custom Metal Tank Fabrication
across the UK

# Custom Metal Tank Fabrication Trade Body Accreditation

The principal UK trade bodies and regulatory schemes governing custom metal tank fabrication include the British Standards Institution (BSI), which sets quality and safety standards; the Engineering Council, which oversees professional engineering credentials; and industry-specific bodies such as the Institute of Water Industries (for water tanks) and the British Compressed Gas Association (for pressure vessels). Many fabricators also hold Pressure Equipment Regulations (PER) 2016 certification, which is legally mandatory for tanks above certain pressure thresholds. Additionally, fabricators may be accredited by CHAS (Contractor Health and Safety Assessment Scheme) or SafeContractor, which demonstrate robust health and safety practices. ISO 9001 certification is common and indicates a company has implemented formal quality management systems. For environmental compliance, some fabricators hold ISO 14001 accreditation. Understanding which certifications apply to your specific project—whether it involves potable water storage, industrial chemicals, compressed gas, or wastewater—is essential, as different standards carry different legal implications.

To verify a provider's credentials, start by checking their membership status directly with the relevant trade body's online register. The BSI maintains a searchable database of certified organisations, as does the Engineering Council. Request copies of current certificates and check their expiration dates, as accreditation must be renewed periodically. Ask whether their accreditation covers the specific scope of work you need—a PER-certified fabricator may only be licensed for certain pressure ranges or material types. Verify that public liability and professional indemnity insurance are valid and adequate for your project value. You can also check Companies House records and cross-reference any Insolvency Service records. This matters because accredited providers have undergone independent audits, follow documented procedures, and maintain professional indemnity insurance, which protects you if something goes wrong.