Our proposals are for a new public space in a peninsula around the station that will include a new station entrance.

What we're doing

As part of the scheme we will:

  • Remove the existing roundabout by closing the northwest arm to all traffic
  • Restore two-way operation to the road network surrounding the new peninsula
  • Create a new public space with better pedestrian access to Old Street station
  • Build a new main entrance to Old Street station that will be accessible from the new peninsula
  • Close three of the four existing subways around Old Street, replacing them with new surface-level, signal-controlled pedestrian crossings
  • Improve facilities for cyclists travelling through the junction with segregated cycle lanes and traffic signals
  • Build a new station lift connecting the peninsula to the subway retail concourse

Site investigations

To make sure that the transformation can go ahead on time we will need to do some site investigations. Our initial surveys are underway and include:

  • Recording in detail the condition of St. Agnes Well
  • Excavating to confirm the location and depth of utilities in the area
  • Digging holes in the footway to confirm where we might plant trees and provide street furniture in the future
  • Assessing the station roof to confirm if it needs to be strengthened

The traffic impact will be kept to a minimum but may result in minor diversion for pedestrians and temporary lane closures.


  • Summer 2018 - The contractor we appointed in October 2017 finished the concept design of the scheme. Towards the end of November 2018 we will ask the London Borough of Islington for planning approval for the proposed changes to the structures on the peninsula
  • Between July 2018 and November 2018 - We complete the design and start advanced preparation works including clearing the sites and diverting utilities
  • Spring 2019 - Main construction work to transform Old Street roundabout starts

The works - What's happening and when

Phase A - enabling works and site investigations

19 November 2018 to February 2019 - Utility diversions by Thames Water, National Grid and UKPN at Cowper Street/Old Street Roundabout will allow a new stepped entrance to be built.

These works will be done in the daytime, Monday-Friday, 08:00-17:00. (We're not planning any works during the holiday period, 22 December 2018 to 6 January 2019.)

19 November 2018 to 21 December 2018 - Site investigation works will include:

  • Trial hole investigations on the traffic islands on the junction approaches - overnight 22:00-05:00. This involves lifting paving slabs and hand digging any loose material below to see if there is a concrete slab under the islands. Noise levels will be low, less than background traffic. This work is taking place at night because of the number of pedestrians who use the islands during the day. Day works would mean closing the crossings - a risk to pedestrians
  • Trial hole investigations on the pedestrianised area of Cowper Street - during the day 08:00-17:00

Phase B - advanced highway works

February 2019 to late March 2019:

  • Works include removing the traffic islands on all four arms of the existing roundabout to make sure traffic flows safely when the main works start in Phase C
  • These works will be carried out at night, Monday-Sunday, 21:00-05:00 to minimise the impact on traffic during the day. Our contractor will try to keep noise levels to a minimum
  • No road or subway closures will be needed for the advanced works. Bus stops may be relocated temporarily. We will display notices on bus stops ahead of any changes

Phase C - main works

April 2019

These works will start - we'll post details closer to the time.


A public consultation on the proposals for Old Street was held between November 2014 and January 2015.

More than 1,300 comments were received. The headline results:

  • 87% of respondents believed that the proposals would improve conditions for pedestrians and cyclists
  • 63% believed that bus and tube passengers would also benefit

See the full consultation report on the Old Street roundabout consultation page.