The entire length of Crossrail is around 73 miles, but due to Reading to Paddington already existing, this section of Crossrail will not be included, but could be possible DLC if DTG ever do route extensions. The reason for including Slough on this route is for some GWR IET operated services to be drivable, which brings the route length in at around 60 - 65 miles. It would also be interesting to see if this route is released before Crossrail is fully opened. Proposed Rolling Stock Class 321 in Greater Anglia livery Operates GA services between Liverpool Street and Southend Victoria/Norwich Class 345 in TfL Rail livery Operates Crossrail Class 387 in Heathrow Express livery Operates the Heathrow Express services from Paddington. Class 800 in GWR livery (bi-mode capability included) Operates all Intercity GWR services Possible DLC Stock Class 315 in TfL Rail livery Operate peak hour services between Liverpool Street and Shenfield Class 360 in TfL Rail livery Operates TfL Rail services that terminate at Heathrow Central Class 720 in Greater Anglia livery Operate most Greater Anglia services out of London Liverpool Street Route + Stock Slough to Reading with GWR Class 387 (12 miles) Romford to Upminster with LO Class 710 (3½ miles)
Route will duplicate part of GWE. It is believed BAA will not grant any licence for the Heathrow extension as they "own" the infrastructure, not Network Rail. Licensing situation with Crossrail unknown and, at this stage, there is probably little or no reference material to cover the underground section through central London.
Problem you are going to run across is licensing for British airport authorities Heathrow terminal stations. The underground sections belong to Hong Kong MTR subsidiary crossrail. Licenses are Network Rail MTR
