Hi PianoGalway
I took the Trinity Diploma in Piano Accompanying in December 07 and really enjoyed it. I did investigate other boards but I liked the freeish choice with Trinity.
Basically you choose your pieces from the grade 7/8 repetoire of your soloist. I accompanied my son Mark on his cello. With your soloist you have to give around a 25 minute recital plus programme notes etc. The other tests are: Ear Tests, Accompanying skills, Sightreading and Presentation skills. These are explained in the syllabus. On top of this you need to perform a solo on the piano from a small selection of chosen works. I played the beautiful Faure Nocturne in Eb major.
the Accompanying of the pieces were worth 40 marks and the piano solo 20. The other tests are all marked out of 10 giving a possible total of 100.
After the exam I wrote to TG with a whole list of things I didn't think were entirely clear in their syllabus so I do hope when they republish it things will be a little clearer.
If you need any more help let me know.
PS I managed a Distinction!