Fifty-five years of precision
from Portsmouth.
A second-generation precision engineering business. Founded in 1968, still family-run, still obsessed with tolerance, surface finish and on-time delivery.
Supplying world-class customers with turned and milled precision machined parts.
GMT is a precision engineering company supplying CNC machined parts to demanding customers across aerospace, defence, medical, industrial and motorsport sectors. We run batch sizes from one-off prototypes to multi-thousand production runs, and operate familiar customer-supply models — VMI, Kanban and JIT — to integrate directly with your manufacturing schedules.
Our single Portsmouth facility houses the entire process: a dedicated estimating and programming office, CNC milling and turning cells, in-house grinding, assembly, part-marking and managed finishing. It means fewer hand-offs, faster turnaround, and full traceability — drawing to finished part under one roof.
Since 1968.
A short history of the milestones that shaped the business.
Founded
GMT established in Portsmouth as a jobbing machine shop serving the local marine and defence industry.
CNC transition
Migration from manual to CNC capacity; first multi-axis turning and milling centres commissioned.
ISO 9001 certified
Formal quality management system accredited. Move to current Victory Trading Estate facility.
ISO 9001:2015
Full drawing-to-finished-part service, VMI/Kanban/JIT supply, 5-axis capacity and lights-out production.
How we work.
Four principles that have kept the same customers coming back for decades.
Tolerance is the product.
Every first-off is inspected before a batch runs. Every batch is inspected before it ships. Documented and signed off.
Delivered when promised.
On-time-in-full is tracked and reviewed. VMI, Kanban and JIT keep your line fed without expediting.
Competitively priced.
Programming, fixturing and setup optimised for the batch size — not over-engineered, not under-specified.
Safe & compliant.
Health & safety inspections routinely carried out. ISO 9001:2015 quality management system independently audited.
Our team and facility.
A skilled, long-tenured team operating out of Units 10–11, Victory Trading Estate, Portsmouth.
ISO CERTIFIED
QUALITY ASSURED
Audited, certified, maintained.
Our ISO 9001:2015 certificate is available for supplier records. Full quality procedures — including FAIR, PPAP and goods-inwards protocols — are available on request.