CASE STUDY: Maintaining power to essential infrastructure

“We have built a very good working relationship with PDS at Heathrow over the last 3 years and have found them to be very professional, competent as well as responsive and reliable. This is backed up by very good reporting, recommendations and communication by their engineers and management team. I would have no hesitation in recommending them to other parts of the Mitie business” Kevin Gray – Account Director, Mitie Technical Facilities Management.


Our current projects include a contract to maintain systems for MITIE UK, including the Heathrow Express Estate of 45 UPS units. 2013-2017.

We have been providing support and maintenance to critical infrastructure control systems for over 26 years. We have now further expanded our maintenance and support services to include our own range of Uninterruptible Power Supply (UPS) Systems. Our battery based, backup power solutions provide protection of critical loads against unexpected power outages which otherwise could have serious operational consequences and loss of service. Our range of systems support power ratings from 1 to 600kVA, with options for single or three phase inputs and outputs. Unlike most competitors we use an open protocol, which has the great benefit of vendor independence with flexible and lower cost maintenance.

Our UPS & Battery works references include: Heathrow Terminals 2, 3, 4 and 5, Heathrow Express, Airside Road Tunnel, Southern Airside road and Northern airside roads, the Control tower; POD parking; Pioneer data centre; Star centre; Energy centre and Airside operations

Our UPS & Battery works references in road tunnels includes: Mersey Tunnels; Meir Tunnels; Baldock; Jack Lynch; Tyne; Roundhill; Southwick hill; Ramsgate; Hatfield; Bell Common and Dartford.

PDS undertake a wide range of service and support work across the Heathrow Airport Estate, this includes UPS Systems including: Uninterruptible Power Systems (Modular / Unitary); Emergency Lighting Systems; Battery Supply and Replacement; External Bypass Solutions and Auto Changeover units for Input/Output. We also undertake a wide range of UPS services including: Design, Installation, Commissioning, Supply and Maintenance 24/7 365.

A supported approach.

At PDS our philosophy is to support you from the initial concept through all stages of a project, and to be able to continue that support through asset life, servicing every aspect of your needs from our own team or with our partner companies.

Contact our expert team