The train now standing at platform one...

DMUs 166508 (left, standing at platform 2) and 158870 (right, standing at platform 1), both in First Scot rail livery, waiting at Slateford Station. I popped up to the station to see what was passing through on my way to Asda and coincided with two services arriving. Could have the number for the DMU on the left wrong, should have noted it down at the time.