Servicing AD Sites Across the UK

Precision Engineered Parts for AD Plants

At Fletch Engineering Services, we specialise in the design, manufacture, refurbishment and repair of precision-engineered components developed specifically for the demanding conditions of the anaerobic digestion (AD) industry.

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Understanding the Demands of AD Operations

With extensive hands-on experience supporting AD plant operators across the UK, we fully understand the operational challenges your equipment faces every day.
From highly abrasive feedstocks and corrosive digestate environments to the pressures of continuous 24/7 processing. Component failure is not just inconvenient; it can lead to costly downtime and lost production. That’s why every part we produce is engineered with durability, reliability and long service life at its core.
Our manufacturing capabilities allow us to produce a wide range of high-performance, precision engineered components for the AD industry, including:
Using quality materials selected for strength and wear resistance, combined with precision machining and fabrication processes, we ensure every component meets exact tolerances and performs reliably in harsh operating environments.

Repair, Refurbishment & Reverse Engineering

In addition to new manufacture, we offer a comprehensive repair and refurbishment service. Where possible, we can reverse engineer worn or obsolete components, improving material specification and design to extend service life
and enhance performance. This approach often provides a cost-effective alternative to full replacement while reducing plant downtime.

Precision. Reliability. Performance.

Supporting Reliable Plant Performance

Whether you require a one-off urgent replacement, scheduled refurbishment, or repeat batch production, we work closely with you to deliver practical, dependable engineering solutions. Our focus is always on minimising disruption, improving equipment longevity, and supporting safe, efficient and cost-effective
plant performance.

What our clients say

Built Around Speed and Reliability

Quick Turnarounds

We focus on rapid turnaround for both manufactured components and repairs on anaerobic digestion sites. In many cases we can produce replacement parts such as digester screws in one to two weeks, compared with typical OEM lead times of twelve to fourteen weeks.

Extensive Knowledge Across Our Team

Our team has developed extensive knowledge of AD plant equipment and the challenges operators regularly face. This allows us to identify issues quickly, understand the demands placed on each component, and manufacture or repair parts with confidence.

Solutions Focused

Every plant and every piece of equipment presents slightly different challenges. Components often fail due to wear, operational conditions, or unique design characteristics.  Our approach is focused on practical problem solving. We assess the component, understand the cause of the issue, and manufacture or repair the part to ensure it performs reliably once returned to service.

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Frequently asked questions

Tight tolerances ensure components fit correctly, operate smoothly and reduce unnecessary wear. This is particularly important in rotating or load-bearing parts where precision directly affects performance.
Components such as shafts, housings, flanges and rotating assemblies all require high levels of accuracy to function correctly within a system