Larry. Thanks for starting the debate! Those are good points about the Black 5 and the different versions thereof. However, it's true to say that equipment improvements in industry are rarely by revolution, usually by evolution, (unless your name is Oliver Bulleid). ie Try a small change and see if it gives a small improvement. At the end of the day a number of these small improvements result in a significant benefit overall. And was there really no gain from those changes to the Black 5? At this distance in time it's difficult to say.
As for the Fowler 2-6-2 tanks my memories of them are on the locals from St Pancras to Luton, and probably Bedford thereafter. They can't have been bad locos after all, as they did that job for many years.
I suspect your surmise might be right, Dave. I can't be certain whether the loco is against the buffer stops, ie just brought the empty stock in, or at the country end and taking empty stock out. If the former it's more than likely that the loco will be attached to a train going north once it's been released.
Here's a picture which must be about as rare as hens' teeth or unicorn droppings. It's a 72XX 2-8-2T in Old Oak Shed, and I've never seen a photo of this class in Old Oak previously. At the time of the photo the loco was allocated to Banbury and had been there since June 1960 so around 70 miles from Old Oak. It's in the roundhouse on 5th August 1961. It was withdrawn in November 1963. (SLS). Its demise came at King & Sons, Norwich, in June 1964. (Rail UK).
Having had a look through the relevant book of 72xx class engines there is a photo of one of them at Reading and 7236 herself at Banbury, and the vast majority somewhere in S Wales so I think it's an extremely rare photo, almost no one would believe it without the evidence. Quite why is less easy, something exceptionally heavy into Acton, loco coal possibly?
Modified Hall 6989, Wightwick Hall, under repair at the Old Oak Factory on 5th August 1961. This is also one of the less common pictures as , although Old Oak was relatively easy to "bunk" the factory was not. 6989 was allocated to Worcester in August 1959 and moved on to Gloucester Horton Road in October 1962 where it was withdrawn in June 1964. (SLS). It was one of the more fortunate example of the class going to Barry Scrapyard. It has been restored and Preserved British Steam Locomotives report it to be at the Bluebell Railway where it will remain through 2024.
6989 Hereford 15/5/49, Worcester 24/3/56, Hereford 18/5/57, Worcester 8/8/59, Gloucester 6/10/62, Wdn 13/6/64.
Condensing 57XX pannier tank 9702 in Old Oak Common Yard on 5th August 1961. It had been allocated to Old Oak from at least 1948 and was withdrawn in May 1962 and went to Cashmore's, Newport where it was scrapped in November 1962. (BR Database).
9702 Apart from a spell 12/1940 - 2/1941 at Southall it was otherwise always allocated to Old Oak.
Castle 4037 The South Wales Borderers in Old Oak Common Yard on 5th August 1961. Home shed was Newton Abbot where it had been since July 1957 and it moved to Exeter in July 1962 where it was withdrawn the following September. (SLS). It was scrapped at Cashmores, Newport, by the end of December the same year.
4037 Rebuild of Star Class Queen Phillipa in 6/26, renamed 14/4/37
BR era Old Oak 1/1/48, Penzance 16/5/56, N Abbott 28/9/56, Landore 23/2/57, N Abbott ?/6/57, Stored ?/3/62, Exeter 14/7/62, Wdn 17/9/62,
Brian