“Crossrail 2 will link three branches in the north with four branches in the south, while connecting the termini of HS1 and HS2 with Crossrail 1 and the West End. Similarly, the new line between Manchester and Leeds will need to integrate seamlessly into the rail network between Liverpool and North Wales in the West and South Humberside, Hull, York, Middlesbrough, York and Newcastle in the East. It will also link up with HS2 at both ends. Again, there is a core section that will have to handle high intensity long-distance services operating at speeds of 200 to 250 km/h. A less obvious but no less difficult challenge will be that of maintaining railway infrastructure and stations that will have to operate reliably more or less 24/7, with very short periods where access will be possible."