I can't be taking out a model railway with locomotives straight from the box can I?
The P Class has been treated to a light dusting of Humbrol weathering powders. Nothing heavy, the new owner might not want a really filthy loco after all. Basically dark brown brushed everywhere, rust on the smokebox and smoke over the boiler top and cab back.
No fixatives are used, the powders are usually sticky enough as long as the model isn't handled too much. Again, the new owner could look at cleaning them off if they prefer.
To my eyes, even a light weathering has improved the model a huge amount. Pride of Sussex always looked, in the photos I've seen, a bit careworn. Never really ratty, but a working loco with all the dirt this entails.
The crew is from Monty's Models. I know a ModelU "proper" crew is available, but not when I needed them and anyway, everyone will have those and I like to be different. Poking the figures in through the cab sides was "interesting" though. Care required to keep superglue from the painted bits. I had a dry-run with the driver and was glad I did.