Design centric
We start from your design intent, with design for manufacture, feasibility and mould-flow advice before any tool is cut.
Your design. Our manufacturing expertise.
Making manufacturing solutions simpler and smarter. Rapid prototyping, low volume production, tooling and injection moulding from our Gloucester and Nuneaton technical centres.
New: HP Multi Jet Fusion 5620 now in Gloucester
Who we are
One UK partner from prototype to production.
From our two UK technical centres, ARRK provides 3D printing and additive manufacturing, vacuum casting, modelmaking, CNC machining, composites, advanced painting, and tooling and injection moulding. We support clients in medical devices, defence, aerospace, transportation and many other industries.
Our project advisers guide you through the manufacturing options available, whether you’re an individual designer or a large corporate OEM.
60+
years of engineering excellence
2
UK technical centres, in Gloucester and Nuneaton
139
years’ combined tooling experience
70+
standard finishes to choose from
Our value
Simpler, smarter manufacturing.
Design-centric thinking, highly skilled engineers and craftsmen, and end-to-end services, with the stability of the Mitsui Chemicals group behind every programme.
Skilled engineers & craftsmen
Engineers, toolmakers, modelmakers and finishers, including a tooling team with 139 years’ combined experience.
End-to-end services
From 3D scanning and prototypes to tooling, low volume production, finishing and assembly, managed by one project adviser.
Trusted by UK defence
Cyber Essentials Plus, JOSCAR registered, and members of ADS and Make UK Defence, with AS9100 on the 2026 roadmap.
Services
Rapid prototyping. Low volume production.
Using a range of technologies, materials, processes and expertise to bring your ideas to life, from a few simple parts to pre-series and bridge-to-production runs.
CAD from partsWhen the original data is lost
3D scanning
Capture existing parts as accurate 3D data when the original CAD has been lost or the physical part has been modified.
Explore 3D scanning
Class-ANear-perfect renderings
Mock-ups & modelmaking
Appearance, lighting and mechanical models that are a near-perfect rendering of your original design.
Explore modelmaking
Fine detailSmooth, accurate surfaces
SLA stereolithography
Smooth, accurate resin parts for fit checks, display models and master patterns for vacuum casting.
Explore SLA
No supportsFunctional nylon parts
SLS laser sintering
Tough, functional nylon parts with no support structures, ideal for snap fits, ducting and housings.
Explore SLS
14+ resinsBuilt in hours
DLP printing
Fast, high-resolution resin parts, including flame-retardant and heat-resistant grades from Loctite, Formlabs and ForwardAM.
Explore DLP
27–95 Shore ARigid to rubber-like
PolyJet printing
Multi-material and multi-colour prototypes that combine rigid and rubber-like materials in a single build.
Explore PolyJet
Carbon reinforcedMetal-like strength
Continuous fibre (CFF)
Continuous carbon fibre reinforcement for strong, lightweight printed parts, jigs and fixtures.
Explore CFF
Days, not weeksComplex metal parts
Metal 3D printing (SLM)
A variety of tough metal parts with complex internal geometry, delivered in a few days.
Explore metal printing
Plastic & metalPrototype to batch
CNC machining
High-quality machined prototypes and short runs in engineering plastics and metals, with fast delivery.
Explore CNC
HP 5620Latest-generation MJF
Multi Jet Fusion
Production-grade PA11, PA12 and TPU parts, dyed and vapour fused for consistent, end-use quality.
Explore MJF
Silicone toolingProduction-like parts
Polyurethane vacuum casting
An SLA or machined master creates silicone moulds for production-like polyurethane parts that look and feel like the real thing.
Explore vacuum casting
139 yearsCombined tooling experience
Rapid tooling & injection moulding
A full range of tooling and moulding options, with DfM consultancy, mould-flow, feasibility and project management.
Explore tooling
Volume metalCompetitive timescales
Diecasting
Volume metal parts delivered in competitive timescales, from pre-series to bridge-to-production runs.
Explore diecasting
Twin autoclavesUp to 5 m long
Composites
A wide range of prepreg materials offering excellent strength, laid up in a clean room and autoclave cured.
Explore composites
5 × 3 × 1.5 mGantry mill capacity
Large-format machining
Nine machining centres, including two large gantry mills, cutting composites, aluminium, steels, Invar and titanium.
Explore machining
Batch buildsRepeatable post-processing
SLS batch production
Volume SLS builds with automated post-processing, giving consistent, repeatable batches for end use.
Explore SLS production- Fast realisationPhysical parts in a matter of days
- Design validationReview form, fit and function early
- Customer centricFrom a few simple parts to batch runs
- Rapid manufactureLow volumes in exceptionally short timescales
- Minimal investmentProcesses that need little tooling spend
- Multiple quantitiesTest batches through to pre-series runs
Also available: metal pressings, compression moulding and Fused Deposition Modelling (FDM).
Finishing choices
The finish is what people remember.
From small parts to big parts, our finishes improve aesthetics, wear resistance, conductivity and feel. Choose a category and tap a swatch to preview it.
Acrylic dyeingAD-050
6 / 10
In-house at Gloucester & Nuneaton
- Spray painting & colour matching
- DyeMansion dyeing
- AMT vapour fusing
- Hand finishing
- Silk screening & assembly
- 8.1 m paint shop, ICorr Level 2
Our UK sites
Two technical centres. One accountable partner.
Gloucester handles additive manufacturing, machining, tooling and moulding. Nuneaton handles precision engineering, composites and finishing.
Rupert SleightholmeGeneral Manager, Gloucester
Gloucester Technical Centre
Our additive manufacturing centre serves designers, engineers and buyers across defence, aerospace, automotive, medical and consumer products, with a project adviser guiding every job.
- SLA, SLS, MJF, DLP and FDM 3D printing
- Metal 3D printing (SLM) and CFF
- Vacuum casting and modelmaking
- CNC machining in plastics and metals
- Paint, dyeing and vapour smoothing
- Tooling and injection moulding
ISO 9001:2015
ISO 14001:2015
Instant online quotes
AddressOlympus Park, Quedgeley, GL2 4NF
Telephone+44 1452 727700
Emailprojects@arrkeurope.com
60+ yearsSupporting aerospace and defence
Nuneaton Technical Centre
Composite tooling, machining and low volume composite components and assembly for aerospace, automotive, transportation, leisure and defence, with dedicated design, tooling, machining and in-house painting.
- Clean-room prepreg, BMI and LRTM epoxy lay-up
- Scholz autoclaves: 5 m × 2.1 m at 200°C / 14 bar and 2.2 m × 1.8 m at 175°C / 20 bar
- Nine CNCs incl. two 5 × 3 × 1.5 m gantry mills
- Paint shop 8.1 m long × 4 m wide × 2.5 m tall, ICorr Level 2
- Prototype, LVM production and blow mould tools
- Live cure-control traceability
ISO 9001:2015
ISO 14001:2015
Cyber Essentials Plus
AS9100 roadmap 2026
AddressCaldwell Road, Nuneaton, CV11 4NG
Telephone+44 24 7658 0700
Emailntc@arrkeurope.com
Industries
Precision manufacturing for every industry.
From equine CT scanner housings to aerospace composites, ARRK supports programmes where accuracy, traceability and finish all matter.
ARRK worldwide
UK-based. Globally backed.
28sites
14countries
3continents
Your project is run from Gloucester or Nuneaton, with the reach of a Mitsui Chemicals group company behind it: engineering in Germany and Romania, pre-series tooling in the Netherlands, and prototyping in France, North America, Asia and Japan. Choose a region, tap a pin, or search by city or postcode.
All sites
Headquarters & UK technical centres
ARRK site
Site density
Quality & accreditation
Accredited today. Aerospace-grade tomorrow.
An integrated quality management system covers both UK sites, and our 2026 roadmap aligns ARRK with the evolving requirements of aerospace and defence supply chains.
Accredited
ISO 9001
ISO 14001
Cyber Essentials+
JOSCAR
ADS
Make UK Defence
AM UK- ICorrICorr L2
2026 roadmap
AS9100H2 2026
SC21Underway
NADCAPIn development- AQAPNATO AQAPRoadmap
Case studies
Real projects, delivered from the UK.
Medical · Low volume production
Ten sets of equine CT scanner housings, 3D printed, machined, painted and delivered within days.
Hallmarq Veterinary Imaging
Over 350,000 MRI and CT scans for horses, cats and dogs
How Hallmarq’s parts were made
- Outer covers, lids and chambers in SLS PA12 glass-filled nylonGloucester
- Aluminium parts CNC machined, with Heli-Coil inserts fittedGloucester
- Carbon fibre plates from our composites centreNuneaton
- Sanded, primed and painted to corporate coloursIn-house paint
Two UK sites, one project teamDownload the Hallmarq case study
Defence · Composites
Decades
Nuneaton’s high-value aerospace and defence contracts often span several decades, from fighter aircraft and large submarine components to battlefield communications casings and drones.
Nuneaton Technical CentreComposites, large-format machining and ICorr Level 2 paint
We think the backup and knowledge of an experienced team, as well as a pre-vetted supply infrastructure, is the best insurance money can buy.
ARRK UK Tooling team139 years’ combined tooling experience
Case study library
AutomotiveDog toyGardeningGuitarE-bikeBike batteryMobility chargerIndustrialMicroscopeScannerVeterinary
11 downloadable case studiesConsumer, EV, industrial and medical
News & events
Latest from ARRK.
Start a project
Have a CAD file ready?
Upload it for an instant 24/7 SLA or SLS quote, or send anything else to our project advisers for tooling, composites, finishing or low volume production.
Instant online quoting
Upload your CAD and price SLA and SLS parts instantly, any time of day.
- Upload CAD
- Choose material
- Order
Material datasheets
Compare properties before you commit to a process.
- SLA
- SLS
- MJF
- DLP
- PolyJet
- CFF
- PU & elastomer
- Typical tolerances
Certificates
Download current certificates for supplier onboarding.
- ISO 9001:2015 ×2
- ISO 14001:2015 ×2
- Cyber Essentials Plus
- Terms & conditions