Hi Leon
Good to see you back in the saddle modelwise, but sorry to hear about the job and hope something turns up soon. Layout looking great and wouldn't mind being one of the operators one day.
Apart from the times when anything could turn up on anything, (certainly on my railway anyhow!) think Southampton docks and boat trains! Obviously Cardiff/Newport is the new cruise ship port due to lack of space at Southampton with the massive expansion in this area. Boat trains could arrive from the North as well as Paddington via the GWML using all sorts of stock/loco combinations.