20 tube and rail milestones (from TfL's latest boardpapers)
12 Sep 2016: Metropolitan line extension - Start of works on site 15 Sep 2016: Tottenham Court Road - New passenger facilities open including new entrances to the station and new ticket hall 24 Oct 2016: District line - Roll-out of new air-conditioned trains complete 19 Dec 2016: Victoria - North ticket hall complete 22 Dec 2016: Launch of Phase 1 of new mobile ticketing app 07 Feb 2017: Northern line extension - Battersea station box retaining walls, piles and plunged columns all complete 16 Feb 2017: Metropolitan line extension - Station construction starts 11 Apr 2017: Bond Street - Station upgrade complete including a new station entrance and step-free access to all platforms 24 Apr 2017: Crossrail - Reduced length unit eight-car trains available for Stage 1 Crossrail services 25 Apr 2017: Victoria line Completion of signalling works required to support 36tph for the 90 minute peak 22 Dec 2017: Availability of weekly capping for Oyster customers 31 Dec 2017: Bank - Bloomberg Place entrance brought into use 30 Mar 2018: Overground extension - Commencement of delivery on site 16 Apr 2018: S Stock - First use of Automatic Train Control in revenue service (Hammersmith to Latimer Road) 18 Dec 2018: Metropolitan line extension - Watford Vicarage Road station complete 30 Jan 2020: Metropolitan line extension - Trial running of trains 13 Dec 2020: Metropolitan line extension - Commencement of passenger services to Watford Junction 31 Dec 2020: Northern line extension - Commencement of passenger services to Battersea Power Station 31 Mar 2021: Overground extension - Commencement of passenger services to Barking Riverside 31 Dec 2021: Bank - Works to relieve station congestion on the Northern line complete
(n.b. These are current forecasts of dates by which milestones will have been met, so not necessarily start dates, and liable to slippage)
And, although no specific dates have been given, we're also very much expecting the following... May 2018: Crossrail - in service from Heathrow to Paddington Dec 2018: Crossrail - in service from Abbey Wood to Paddington May 2019: Crossrail - in service from Shenfield to Paddington Dec 2019: Crossrail - full service operating including Reading
