TfL picks Costain for South Kensington upgrade: design and delivery notes for engineers
Reviewed by Tom Sullivan
First reported on The Construction Index
30 Second Briefing
Transport for London has appointed Costain under its Infrastructure Improvement Framework to deliver a design-and-build upgrade of South Kensington station, including step-free access and bringing a new dedicated eastbound Circle and District line platform into use by 2031. Works will integrate with a Native Land/Places for London joint venture, which has consent for a RSHP-designed around-station scheme adding 50 homes, refurbished retail and a four-storey “Bullnose” building fronting the station. Funding comes from TfL’s Business Plan, a £12m contribution from the Royal Borough of Kensington and Chelsea, and a separate 1851 Commission contribution.
Technical Brief
- Initial enabling works for the new Thurloe Street entrance are scheduled to start before year-end.
- Contract is let as design-and-build under TfL’s multi-supplier Infrastructure Improvement Framework, streamlining approvals and interfaces.
- Heritage restoration scope includes the historic arcade and Circle/District line platform architectural features.
- Retail units within and around the station will be refurbished concurrently with transport works to reduce future closures.
- Around-station development includes a four-storey “Bullnose” building, requiring tight construction phasing at the station frontage.
- Scheme delivers 50 residential units, including on-site affordable housing, over and adjacent to transport assets.
- Ground-floor Bullnose uses are retail/food and beverage, with upper levels configured as flexible office space.
- Station and over-site development are under separate contracts but require integrated programmes to manage passenger disruption and access.
Our Take
South Kensington station joins a cluster of major TfL capital works in London that our database tracks alongside the Silvertown Tunnel scheme, signalling that TfL is again committing to multi‑year, high‑disruption projects after several years of constrained budgets.
Places for London’s role at South Kensington links this scheme to its wider regeneration activity noted in our coverage, where the property arm is increasingly used to lever transport landholdings into mixed‑use housing and training opportunities, as seen in its construction skills partnership for care leavers.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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