View eastward, towards Brentford (to the right), Paddington (top right); junction of branch from Brentford. 9761 is shunting the shed with empty loco coal wagons and a bogie well wagon to be taken away. A spare single car DMU stands in the depot headshunt.

Peter Kerslake adds "On what looks to be a sunny and crisp October day this fine view at Southall includes an immaculate "Castle" apparently according to the note already on site heading westwards away from Paddington but with a Reporting Number for an express heading towards the Capital rather than away from it.
The "Castle" is probably a returning
working to Worcester and Hereford from the morning's "Cathedrals Express", the 7:45 a.m from Hereford to Paddington as Reporting Number "A22" is appropriate to that working, and if this is a down working then the morning's Reporting Number has been left on in error by the "Castle's" fireman.
In that case this would be a Worcester based engine,that shed also keeping its Top Link "Castles" in tip top condition.
The footbridge is possibly the one favoured by the young enthusiasts in the days of steam , a meeting place for those who later bought 1466 and formed the fledgling Great Western Society , part of the bridge now being at the Society's base at Didcot .