Metropolitan Railway Bo-Bo No.12 Sarah Siddons was used on a number of trains to Amersham during the London Transport Museum's Heritage Day on 14 September 2008. Unfortunately due to the locomotive being at the north end of the stock, and with the very restricted vantage points on the line, it was very difficult to photograph. I decided the best way to get an uninterrupted view of the loco was to take a 'going away' picture as 20189 headed the final service (the 16:30 Amersham to Harrow) through Chorleywood station. So here we see Sarah Siddons bringing up the rear and passing the boarded up signal box. Unfortunately the sun had just started to fade out into high cloud by this stage in the afternoon.