Cheers so much Sarah and David. Both of you were spot on
Definitely would have been the Garuda A332...i thought i saw a hint of blue but I couldn't quite tell because of the sun glare.
I just thought it unusual because like i mentioned in my original post, this was the first time i've seen an a/c flying this particular heading at quite low altitude (i.e. apart from the usual little GA planes heading in towards Prospect and BK).
Cheers once again
Russ