Transport for London (TfL) have issued another consultation on the details of the East-West Cycle Superhighway route through St James Park and Green Park, plus the junction of Northumberland Avenue and Victoria Embankment. Some improvements have been made which will reduce journey times for vehicles.
You can see more information and respond to the consultation on-line via this web page: https://consultations.tfl.gov.uk/cycling/east-west-phase-2?cid=east-west-consult but you have to do so before the 29th March!
The latest journey time impacts for the whole route are now here: https://consultations.tfl.gov.uk/cycling/c075a39a/user_uploads/traffic-data-table-updated.pdf
You can see they are not as bad as originally forecast but still increase journey times from the Limehouse Link Tunnel to Hyde Park Corner by over 6 minutes both east and westbound at certain times.