Working At Height News Channel

London Underground and 4LM Project

13th March 2019

The 4LM (Four Lines Modernisation) project currently underway at London Underground (LU) is the largest project of its kind in the world and worth in the region of 1.35 billion GBP. 

Working At Height Limited (WAH) have been involved with it since December 2017, this culminated in spending the first part of 2019 on site at Neasden Depot, the largest depot on the network, completing all works and demobilising from site on the 27th of February. 

The design, manufacture, planning, organising of the works were both time consuming and testing taking well over 12 months, as there were strict compliances and procedures required which can only be learnt fully once engaged on the project. 

WAH’s small part of the project included designing and manufacturing 6 x DAPs (Driver Access Platforms) and 5 x MAPs (Mobile Access Platforms). The DAPs to be in fixed position to allow safe access and egress from the new S Stock trains for the drivers and shunters. The MAPs are required for general train maintenance. 

WAH were also instructed to complete civils works which included building 3 x 3000mm long x 900mm wide concrete steps that interfaced with the DAP stairs at what became known as the ramp end of the 200m long depot, this entailed breaking out existing walls and then finishing with new hand railing, providing a level surface for the drivers and shunters to transfer from the DAP stairs and onto a level surface and not the existing ramp.

Below are parting comments from the LU Project Managers.

A big Thank You for all your efforts over the last year or so. The product delivered onsite looks fantastic and is a credit to you. Hope to see and work with you again in the very near future”

Patrick Murphy
Project Manager Neasden HMF 
Four Lines Modernisation

“I echo Patrick’s thanks, and like Patrick says the DAPs/MAPs look brilliant on site”

Amy Footer
Senior Project Manager
Neasden Depot Heavy Maintenance Facility
Four Lines Modernisation

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Working at Height

Southern Office: 01483 415 410

Northern Office: 0114 209 6206

Southern (Head) Office

Working At Height Limited, Amberley Court,
Old Elstead Road, Milford, Surrey.
Tel: 01483 415 410
Fax: 01483 417 719

Northern Office

Working At Height Limited, The Portergate,
Eccleshall Road, Sheffield.
 S11 8NX
Tel: 0114 209 6206
Fax: 0114 209 6001

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