A fixed sequence with formal gates.
Every package moves survey to as-built through the same governed sequence. Nothing proceeds to civils or handover until the LLD and the assurance case are signed. The same discipline carried the Connected London LLD packs through approval first time.
Survey
Ground-truth route, ducts, chambers, reach.
IHLD / HLD
Topology, backbone routes, service sectors.
LLD
Splice packs, channel plans, chamber layouts, BoM, civils SLDs.
Sign-off gateAssurance
Link-loss, OSNR and GSNR proven to end-of-life margin under TfL and LU assurance.
Sign-off gateAs-built
Red-line capture, handover, O&M, close-out.
How we engineer a span.
Connectors, fibre and splices are budgeted event by event, then the whole span is proven against the worst-case, end-of-life limit. If the margin does not close, the design changes before the civils do.
The design process is engineered too.
Design-rule automation and data QA run inside the production path, in IQGeo, QGIS and bespoke tooling.
Rules, encoded
Client design rules live in the tooling, so the rule is applied every time, on every span.
QA in the path
Topology and data checks run inside LLD production, catching design errors before they become construction errors.
Clean handover
As-builts, O&M inputs and close-out documents leave the estate operable and the record trustworthy.
What lands on your desk at each gate.
LLD pack
Link-loss and power budgets, fibre allocation sheets, splice packs, schematics.
BoM / BoQ
Bills of materials and quantities a contractor can order against.
SLDs
Civils, duct and box-to-box single-line diagrams.
Method statements
Migration and cutover method statements for live estates.
MoP / RFS
Method of procedure and ready-for-service documentation.
As-builts
Red-line capture and as-built records at handover.
Bring us in at survey, not at rework.
A 30-minute technical call to pressure-test route, reach and margins before anything is committed to civils.