The Skyservice 320 that suffered a tailstrike at BRS in June is C-GTDK.
This aircraft is now back in service at BRS and is flying fulltime from there for MyTravel along with a MyTravel 320, so it is highly unlikely that this was the aircraft at CWL.
By coincidence there is a current thread in Airlines, Airports and Routes under the heading 'Skyservice into BFS' where this is alluded to.