Well Hornby did the 0-4-0T (the infamous "Polly") under running no. 7178. Although fictitious it is quite presentable and with a little effort could pass as one of the lines assorted shunting fleet.
I also seem to recall that Bachmann did one of the S&DJR jinties, and I also have a feeling a 2P was produced, but this could have been a special edition.
If modelling in BR days you have a much wider choice as locomotives used included BR standards, SR pacifics and other tender locos and a huge number of LMS stuff as well.
Regards