This project was undertaken to maintain the integrity of the signalling system by renewing the life expired signalling infrastructure to current requirements, with the abolition of redundant routes and equipment where possible.

The works, spanning over 13 miles of track, included the renewal of 650v lineside distribution system, location case renewals, signal renewals with LED heads and all lineside multi core and tail cables. Each stage of planning was extremely complex due to the nature of the working area which has 10 running lines including the East Coast Mainline.

Successful completion of this project required daily communications and close collaboration with Network Rail's planning teams to ensure lineside access was provided for all of the 25 stages, and that no conflicts arose from other worksites as possessions were often required on all running lines including the East Coast Main Lines.

Works undertaken

The work undertaken is as follows:

• The testing and commissioning of new location cases 76/16/1.
• The design, complete installation, testing and commissioning of location cases at 76/06, 76/09, 76/12, 76/14.
• The design, complete installation, testing and commissioning of New relocation equipment buildings (REBs) 76/40 to replace location cases 76/39.
• The complete installation, test and commission eight 48 Core lineside signalling cables between Peterborough relay room and location cases 75/19.
• Updating the Peterborough Train describer to accommodate alterations to Fletton Junction which have taken place.
• Recovery of redundant insulated block joint at Fletton Junction.
• Recoveries of redundant equipment including, location cases, cables, location foundations, signal structures associated with works described in this document.
• Rectify defects identified on the 650v feeder system.