From the First Great Western Website :
09:32 Southampton Central to Westbury due 10:39
This train has been cancelled. This is due to an earlier train fault.
12:32 Southampton Central to Westbury due 13:39
This train will be cancelled. This is due to an earlier train fault.
09:22 Portsmouth Harbour to Cardiff Central due 12:41
This train has been revised. It will additionally call at: Dunbridge, Dean and Dilton Marsh.
At this rate , they may as well include Dean , Dunbridge and Dilton Marsh in an improved Portsmouth - Cardiff timetable.......
http://www.shinewithstyle.co.uk/literature/Suggested%20Portsmouth%20-%20Rhoose%20timetable.pdf

12:22 Portsmouth Harbour to Cardiff Central due 15:42
This train has been revised. It will additionally call at: Dunbridge, Dean and Dilton Marsh.
A couple for you , Graz :
14:00 Cardiff Central to Weymouth due 17:12
This train will be terminated at Bristol Temple Meads. It will no longer call at: Keynsham, Oldfield Park, Bath Spa, Freshford, Avoncliff, Bradford-On-Avon, Trowbridge, Westbury, Frome, Bruton, Castle Cary, Yeovil Pen Mill, Yetminster, Maiden Newton, Dorchester West and Weymouth. This is due to a shortage of traincrew..
Road transport will be provided.
17:21 Weymouth to Bristol Temple Meads due 19:39
This train has been cancelled. This is due to a shortage of traincrew..
Road transport will be provided as far as Westbury.