As fibre networks continue to expand across the UK, making sure the infrastructure used to build them meets the right standards has become an increasingly important part of project planning.
For network builders and procurement teams, compliance isn’t just a technical requirement. It plays a direct role in keeping networks safe, supporting long-term reliability, and preventing delays during installation.
At a time when fibre rollout is rapid, the ability to source compliant products and quickly verify the right documentation can make a real difference to keeping projects on track.
Understanding the key requirements for fibre optic cables, ducts and enclosures helps operators reduce risk and ensure networks are built to the standards expected across the telecoms industry.
Compliance is now part of procurement strategy
Historically, compliance was often something checked later in the process, during installation or final certification.
But as fibre builds have scaled across the UK, procurement teams are now factoring in compliance from the beginning as they select products and suppliers.
Products used in fibre networks, particularly those installed inside buildings, may fall under construction product regulations. This means they must meet specific safety and performance standards.
For operators, this means making sure the right documentation and certifications are in place before products are specified or purchased.
Getting this right early helps prevent:
- Installation delays caused by missing documentation
- Product changes during builds
- Additional costs from replacing non-compliant products
- Project slowdowns during inspections or audits
As the industry matures, compliance is becoming part of a wider procurement conversation alongside product availability, supply chain resilience, and long-term network performance.
Key compliance standards for fibre infrastructure
Construction Products Regulation (CPR)
The Construction Products Regulation (CPR) is one of the most important standards affecting fibre cables.
CPR applies to cables used in permanent building installations, including fibre networks in commercial and residential environments.
Under CPR, cables are classified based on how they react in a fire. These are known as Euroclass ratings, defined under the standard EN 50575.
Typical classifications include:
| Euroclass | Fire performance |
| B2ca | Very limited contribution to fire |
| Cca | Limited contribution |
| Dca | Acceptable contribution |
| Eca | Basic fire performance |
The required rating depends on where the cable is installed. Buildings with more people or public access usually require higher fire performance standards.
For procurement teams, checking the correct rating early ensures the product meets both regulatory and project requirements.
CE and UKCA product marking
Another area that often causes confusion is product marking.
Many construction products have traditionally carried the CE mark, showing compliance with EU standards. Since the UK left the EU, some products may also require UKCA marking, depending on how they are classified.
For fibre infrastructure products, the correct marking depends on:
- The type of product
- Where it is manufactured
- Whether it falls under construction product regulations
Working with suppliers who understand this helps ensure products arrive on site with compliant certification already in place.
Declaration of Performance (DoP)
For CPR-regulated products, manufacturers must provide a Declaration of Performance (DoP).
This document confirms how the product performs and how it has been tested.
A DoP typically includes:
- Product identification
- Fire performance classification
- Applicable standards
- Manufacturer details
For buyers and installers, it provides clear assurance that the product does what it says it will.
A practical compliance checklist for fibre procurement
When sourcing fibre infrastructure products, operators should ensure suppliers can provide clear supporting documentation.
Fibre optic cables
✔ CPR classification and Euroclass rating (EN 50575)
✔ Declaration of Performance (DoP)
✔ Correct CE or UKCA marking
✔ Fire performance test documentation
✔ Product traceability
Fibre optic ducting
✔ Manufacturer technical specifications
✔ Durability and material testing documentation
✔ Relevant quality certifications
Fibre optic enclosures
✔ Environmental protection ratings (e.g. IP ratings)
✔ Structural durability testing
✔ Installation and safety documentation
Having this information early in the procurement process not only reduces risk and keeps builds running smoothly, but can reduce the total cost of ownership by ensuring the correct products are purchased and installed.
Why supplier relationships matter
As fibre deployment accelerates, operators increasingly rely on partners who understand both the technical and regulatory side of telecoms infrastructure. Working with experienced suppliers makes it easier to verify compliance and access the right documentation when it’s needed.
At Altnets, we work closely with network builders across the UK to supply fibre infrastructure products backed by the necessary certifications and support.
By combining product expertise with strong manufacturing partnerships, our team sources what our customers need, when they need it, while staying aligned with industry standards.
Building networks that stand the test of time
The UK fibre rollout continues to move quickly. As networks expand, making sure infrastructure meets the right compliance standards will remain a key part of delivery.
By checking certifications and documentation early, operators can ensure their networks are built safely, efficiently, and with long-term performance in mind.
And as the industry continues to evolve, working with trusted partners will play an important role in keeping project builds on track.
Need support sourcing compliant fibre infrastructure?
If you’re planning a fibre build and want confidence in the products you’re specifying, the Altnets team is always happy to help.
Speak to our expert team to explore our range of fibre cables, ducting and enclosures.
