SEWWEB gets the go-ahead and the logical thing is to extend it to Swindon and interface with TransWilts land?
Wellllll ... the electrification will be in place for a regional service from Swindon calling at Royal Wootton Bassett, Hullavington, Badminton, Sodding Chipbury, Coalpit Heath and Winterborne, Bristol Parkway, Patchway, Aztec West, Pilning Westgate, Severn Tunnel Junction, Magor, Newport, Wentloog and St Mellons, Splott and Cardiff Central. All you would need would be the stations.
Amazingly, many of those have been talked about. A service which links Swindon, residential development and development potential near the M4 in Wiltshire, existing houses with nearby railways but no stations in South Gloucestershire, business areas in north Bristol and Severnside, with cities, suburbs and towns in South Wales .... such a service makes too much sense and is too bold a suggestion for anyone to take seriously
.