+44 (0)1768 392 236 Mon - Fri 09:00 - 17:00 The Park • Rickerby • Carlisle CA3 9AA
+44 (0)1768 392 236 Mon - Fri 09:00 - 17:00 The Park • Rickerby • Carlisle CA3 9AA
ISO 9001:2015
Made in Britain
UK Manufacturing
Full Compliance
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About GTL Systems

The Sectors and Markets we Operate in

Power Generation

SCR Systems for Power Generators, including Backup Powerplant,Triad, and STOR projects for compliance with the Medium Combustion Plant Directive (MCPD).


SCR emission after-treatment systems for road-going vehicles for compliance with Ultra Low Emission Zones, Low Emission Zones and Clean Air Zones.


Exhaust gas after-treatment systems all types of Non-Road Mobile Machinery (NRMM) for compliance with NRMM Low Emission Zones.

Special Projects

Special and bespoke projects which may include Aerospace, Marine, Offshore and many other industries where harmful emissions must be strictly managed.

Our Expertise

GTL Systems is a world leader in the design, manufacture and installation of exhaust after-treatment systems.  We have installed multi-stage emission treatment and filtration systems for a broad range of applications from industries as diverse as power generation, on-road, aerospace and off-road machinery.

As an ISO9001:2015 approved company, we bring a philosophy of “Quality without Compromise” to every project we undertake.

See how we can help your business comply with emissions requirements.



Diesel Particulate Filtration (DPF) is a process that removes microscopic particles (typically in the 0.2-150 μm range) from an exhaust emission system.

Diesel Oxidation Catalyst

The Diesel Oxidation Catalyst (DOC) is designed to oxidize carbon monoxide, gas phase hydrocarbons, and the SOF fraction of diesel particulate matter to CO2 and H2O

Selective Catalytic Reduction

Selective Catalytic Reduction (SCR) is a means of converting nitrogen oxides, also referred to as NOx into diatomic nitrogen (N2) , and water (H2O) with the aid of a catalyst.

A gaseous reductant, typically anhydrous ammonia, aqueous ammonia or urea, is added to the stream of exhaust gas and is adsorbed onto a catalyst. Carbon dioxide, CO2 is a reaction product.

Site Survey & Consultancy

If you’re not sure if your power generation plant is compliant with the Medium Combustion Plant Directive (MCPD), or would like to know what steps are required for you to use your assets to generate or save revenue, then we can help. 

We can arrange site surveys, permitting audits and even detailed consultancy work (including modelling scenarios) with our network of internationally respected experts.

We are Proud to have achieved ISO9001:2015 Quality Certification

Satisfied Customers
Completed Projects
Countries Served
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