King’s Cross – The Plimsoll Building (P1)

SES Engineering Services

81 weeks



Utilising world-leading off-site manufacturing

In 2016 SES Engineering Services marked the culmination of its mechanical and engineering (M&E) contract on a 67-acre landmark development at one of the most significant new parts of central London. Working alongside long-standing client’s main contractor Carillion and developer Argent, SES successfully provided full design and build M&E services to more than 255 apartments across 13 floors of The Plimsoll Building at King’s Cross and two new schools including the Frank Barnes School for children who are hard of hearing.

  • 10 48m 3D mechanical and electrical risers delivered
  • 255 Box of wonders delivered

As a result of a positive SES project performance we have now secured a further two phases on the King’s Cross development for The Gasholders and the S2 Building projects.

14,600 Man hours saved

The Plimsoll Building

Or P1 as it is better known is a showcase for the latest off-site manufacturing techniques and has attracted widespread praise from the engineering industry. Through our pioneering and award-winning BIM2MOSAIC technology we were able to develop our revolutionary ‘box of wonders’ – essentially a utility cupboard, one for each of the apartments which incorporated all essential mechanical and electrical plant and equipment.

Both SES and CCL’s approach from day one was to have trust in each other, succeed in every task and enjoy doing it. The early engagement and commitment of the pre-fabrication provided early benefits with the basement substantially complete months ahead of programme and the quality of the service cupboards were exemplar and used as the way forward on future King’s Cross projects.

Ian Cordery Project Director, Carillion

The outcome

These installations – including a heat interface unit, MVHR units, underfloor heating manifolds, consumer unit, BT Home Hub and spacial planning for all white goods represented a major efficiency and safety innovation. Created off-site, these units would otherwise have required multiple trades on site working in a congested area, representing a major logistical and health and safety issue.

SES Engineering Services

The UK’s pre-eminent design-led M&E provider.


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