We should also note that Grand Union will call at Cardiff East Parkway and Severn Tunnel Junction. The stop at STJ will be particularly useful for people in this south east corner of Wales and the nearby Forest of Dean. People from Usk, Raglan and Monmouth and all the many villages will surely find the STJ stop most useful. At present they have to drive over to Bristol Parkway to gain access to London trains and this involves some pretty jammed up motorways. Failing that, congested Newport would be the place to board London trains for SE Monmouthshire people.
However, I note that road access to STJ is difficult - see map. Ideally, a link should be made from the former toll plaza making use of the over bridge. A new road link to the station also needs to be made across the fields from a new inrterchange on the M48. I read somewhere that the Welsh Government would like to downgrade the M48 to an ‘A’ road so that they could insert a roundabout rather than an interchange. In my opinion, this would be madness as should a crash occur on the M4, the old Severn Bridge (M48) provides a suitable alternative route. Can you imagine what would happen if a roundabout was inserted?