I still don't have a usable garage, so I still don't have a railway room yet, however I have been keeping a eye out at shows and online for various locos.
As i'm setting the layout in West Yorkshire, I have been using http://www.railuk.info/index.php to try and get an idea of what sorts of engines were running in the region at the start of BR, I have working on assumptions like; if a loco was based in say Leeds, then it could potentially work a trans pennine service to Manchester or Liverpool.
So on that basis, i have starting building my loco fleet. At present it consists of:
Fowler 4P Compound, BR lined Black with an early crest
Stanier Jubilee, BR Lined green with a late crest
Fowler 4F, BR plain black with a late crest
2x LYR tanks, BR lined Black, one with early crest, one with 'BRITISH RAILWAYS' on the tank sides.
So the plan is to start doing some modelling to get these into an appropriate livery and renumbered to an appropriate shed for the period and region.
While making the list I also looked for reference pictures online (which I'm not going to share here because I haven't reached out to the owners for permission) so that i can try to get the models close to the real thing.