Unlike the 80's & 70's the 450's were never split and all 3 vehicles ran together for their entire life.
Above is Motor Card 458 being readied for start up at Downpatrick
Centre Car 798 at Downpatrick this vehicle is being turned into a buffet and on open days is often found at the other end of the line and below is the buffet interior mid way through conversion
The last vehicle in the formation is Driving Trailer 788, sadly I couldn't get a better shot than this but hopefully I will on my next visit.
Motor Car 458
Driving Trailer 788