Air quality in underground transport environments has been a growing concern for operators, staff, and passengers alike. Dust and particulate matter can build up quickly in enclosed spaces, and finding effective, practical solutions to improve conditions is a challenge facing many networks. Hulkro has been at the forefront of exploring innovative options, recently delivering the installation of air filters as part of a trial at Baker Street station.
Working closely with Transport for London, our role was to provide full installation support and technical assurance for the trial units. This began with a detailed survey of electrical supplies on site, followed by preparing the necessary space and load applications and producing electrical design reports to ensure safe integration with the station’s existing systems.
Once approvals were in place, our team coordinated the collection of the air scrubber units from Lillie Bridge Stores and arranged their safe delivery via Bond Street station, using step-free access routes and track trolleys to transport them directly to Baker Street. Installation required temporary connections to the local LV9 platform sockets, with flexing carefully routed through station freeze panels. In parallel, wiring from the LV transformer and vent shaft sockets at Green Park was surveyed to confirm options for future connections.
This trial installation represented more than just equipment placement — it was about ensuring the technology could be deployed safely and effectively in one of the busiest parts of the London Underground. By taking a meticulous approach to planning, assurance documentation, and logistics, Hulkro enabled the project to progress smoothly while minimising disruption.
The Baker Street trial is a key step in developing solutions to improve air quality across the Underground network. With further phases planned, the insights gained from this installation will help shape how future systems are rolled out, supporting healthier environments for both staff and passengers.
Contact Hulkro today to learn how our installation and assurance expertise can support innovative projects that improve the resilience and safety of transport infrastructure.



