Cross London Rail Links (Crossrail) is a 50/50 joint venture company formed by Transport for London (TfL) and the Strategic Rail Authority (SRA).  Crossrail is tasked with promoting and developing two new routes through London:

Crossrail line 1 (East-West) - Map (pdf file)

This scheme is proposed to link main rail lines east and west of London via a new tunnel under the city . The project will provide interchanges with the Underground rail system and is seen as an important addition to the public transport network to enhance London's status as a world city. The Environmental Impact Assessment (EIA) is central to managing the potential impacts during construction and operation, and is in the process of being prepared as part of a feasibility study.

Crossrail line 2 (NorthEast- SouthWest or Hackney-Chelsea) - Map (pdf file)