Over 150 years of servicing the Marine and Industrial engineering industry

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Specialists in supply, installation & service

James Troop are specialists in the supply, installation, servicing, overhaul rehabilitation of traction, industrial and marine diesel/gas engines and generating sets, we are an ISO 9001 Company.

We have met the needs of the world-wide power generation market for over a century in supporting major diesel engine manufacturers and end users with our technical and practical knowledge and by supplying spare parts for various engine brands.

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From sales, to servicing, to maintenance, our team can help you whatever the size of job. Learn more about our experts.


Meet the team

Supporting some of the world’s largest companies

Utilising our Company resources, employing technical staff and manufacturer trained Field Service Engineers, our aim is to provide a complete ‘one stop’ package covering all types of power generation applications on a 365, 24/7 basis.

The Company has a workforce typically of 30 personnel and a turnover of circa £6.0 million. We are ISO 9001:2015 Quality Assurance approved with Lloyds  and meet all current Health & Safety requirements.

We support some of the largest Companies in the world, operating in the rail industry, marine, utilities, industrial, military, Government, offshore & wind farm applications. We are involved in multi fuel applications and deal with most engine manufacturers.

Our Services


We can offer full engine overhauls or repairs depending on our customers’ requirements:

Option 1

  • Overhauls and repairs can be completed at the customer’s site or vessel as required.

Option 2

  • At our fully equipped workshop in Runcorn
  • Factory trained engineers
  • Fleet of service vehicles
  • Genuine spare parts with manufactures warranty
  • Fast response
  • Excellent spares availability
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These services include:

  • After-sales service and support
  • Factory trained engineers
  • Engine health checks
  • Load bank testing
  • Oil & fuel analysis
  • Genuine spare parts
  • 24/7 availability if required
  • Call out
  • Dedicated service desk

Market Sectors:

  • Hospitals
  • Industrial
  • Retail Outlets
  • Airports
  • Commercial
  • Marine
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Technical Support includes:

  • Staff experience
  • Technical expertise of management
  • Latest technical bulletins
  • Service desk
  • Engine manufacturers full support
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Testing, overhauling and repairs of fuel pumps and fuel injectors

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An important factor closely tying our activities together is our spare parts division.

Operating under agreements with major engine manufacturers, our fully computerised system provides ‘off the shelf’ genuine spares for a wide variety of engine types and manufacturers.

This facility extends to overnight supply throughout the UK and OVERSEAS to meet tight schedules, thus enabling us to maintain total control over individual sites and provide a ‘one stop’ service of providing manpower, parts and technical support.

Download our Terms and Conditions of Business

The Quality Controlled Stores areas are self-contained units racked by equipment manufacturers name and part number. In addition, we offer a procurement facility to source and supply any equipment parts clients may require.

Download our Terms and Conditions of Business