A4 spotted this morning in steam

[aeropilot]

Driving past Southall station this morning at 7am, and got a nice surprise to see an A4 with coaches sitting at the southern platform side getting up steam. I'm guessing getting ready to depart on a special, or to make a transit journey to go on a special. I'm guessing it was Union of South Africa.

[Boatbuoy]

It's due to be pulling the Dorset Coast Express (Victoria to Weymouth) today. I believe UofSA lives at Southall.

Link: http://www.uksteam.info/tours/trs17.htm