Original sentence: A half hourly London Paddington to Cardiff Central service with hourly extensions to/from Swansea.An hourly Gloucester to Westbury service, with extensions to Great Malvern and Weymouth.An hourly Plymouth to Edinburgh service with extensions to/from Glasgow or Aberdeen in the north and Penzance in the south.CrossCountry operate two services, an hourly Bristol Temple Meads to Manchester Picadilly service, with extensions to/from South West England.First Great Western operate three services, an hourly Bristol Parkway to Weston-super-Mare service
Edited sentence: CrossCountry operate two services.First Great Western operate three services: an hourly Bristol Parkway to  service; a half-hourly London Paddington to  service with hourly extensions to/from ; ans an hourly  to  service, with some extended to  and.One is an hourly  to Manchester Picadilly service, with extensions to/from South West England.The second is an hourly  to  service with extensions to/from  or  in the north and  in the south