The latter part of the Crossrail programme is characterised by installation of railway systems and building services. The design and installation of the Mechanical, Electrical and Public Health aspects of the scheme has been managed similarly to the Civil Engineering although contractors have had a larger role in the design process.

To ensure that the Contractors at each location produce their designs to a common theme, the Crossrail MEP Team have produced a series of technical papers and guidance documents. These ensure best practice is followed with an emphasis on operability and maintainability.

From 2017 a greater proportion of papers presented to the Technical Papers Competition relate to MEP design and construction and the papers published here include key subjects such as uninterruptible power supplies, installing platform edge screen systems in proximity to overhead electrification equipment, and designing spaces and systems to avoid or cope with emergency situations such as fires.