The North-South Cycle Superhighway is already under construction between Stonecutter Street and Elephant & Castle.

TfL, together with Camden and Islington Councils, is now consulting on proposals to extend it north up to King’s Cross.

The proposal is that it should continue north on Farringdon Road to Greville Street where northbound cyclists would turn onto a quiet back-street route to King’s Cross.

Southbound cyclists from King’s Cross would turn off the back-street route onto Farringdon Road at Ray Street via a new signalised junction and continue south on a stepped cycle track.
Detailed proposals

Section 1 - Farringdon Street (between Stonecutter Street and Holborn Viaduct)
https://consultations.tfl.gov.uk/cycling/afgdegdg8t9

Section 2 - Farringdon Street (between Holborn Viaduct and Charterhouse Street)
https://consultations.tfl.gov.uk/cycling/afgdasrcgrm2908

Section 3 - Farringdon Road and Saffron Hill (between Charterhouse Street and St. Cross Street)
https://consultations.tfl.gov.uk/cycling/rcgrthth5w6

Section 4 - Farringdon Road and Saffron Hill (between St. Cross Street and Ray Street)
https://consultations.tfl.gov.uk/cycling/cg25ty5cy

Section 5 - Farringdon Road, Ray Street, Herbal Hill and Warner Street
https://consultations.tfl.gov.uk/cycling/cg5eh4h

Section 6 - Warner Street and Phoenix Place
https://consultations.tfl.gov.uk/cycling/cv45h646

Section 7 - Pakenham Street, Calthorpe Street and Cubitt Street
https://consultations.tfl.gov.uk/cycling/c5hv365j753j

Section 8 - Ampton Street, Sidmouth Street and Tavistock Place
https://consultations.tfl.gov.uk/cycling/vch34yv3u

Section 9 - Tavistock Place and Judd Street
https://consultations.tfl.gov.uk/cycling/qgc245y

See also this related scheme for the treatment of the Euston Road junction and continuation northwards: http://camdencyclists.cyclescape.org/issues/2057-midland-road-and-euston-road-judd-street-junction-north-south-cs-link