For 28mm revolutionary figures, Eureka miniatures (Australia or US) again do beautiful ranges of French, Austrians and now Russians too.
Another option for 28mm is to look at Perry miniatures and check their AWI ranges of British and French. Purists will say the uniforms are not identical but the ones with Bicorne are very close and figure quality is high. Good prices too.
Essex http://www.essexminiatures.co.uk/pages/15mm-napoleonic do a range of French in 15/18mm, except they don't do a line cavalry figure in bicorne: The line cavalry from their Spanish range might do. They also do Austrians in the helmet of 1798 and two ranges of Prussian infantry, 1803-1806 (in breeches) and 1806-1808 (in overalls, though overalls were in wear from 1794) would be useful. The grenadiers' cap limits those to 1799 onwards. The bicorne isn't quite right for the early phase of the Wars when the Prussians were actually fighting but the difference is small and could be fixed by a paint job if required. The great omissions are cavalry and artillery but they could be filched from the Spanish range easily enough. AB have a comprehensive range of Prussians of the Jena period http://www.fighting15sshop.co.uk/prussians-240-c.asp that can be adapted to suit and Austrians in casket and 1798 helmet, plenty of early Napoleonic French. No Russians, though. Anthony Barton's previous, Battle Honours range of Revolutionary figures has pretty much complete ranges for pre 1798 Austrians in casket, Russians in bicornes and French, along with a few British.http://www.timecastmodels.co.uk/bh15revolutionarywars/bh15revolutionarywars.html The Napoleonic range has Austrians in helmets http://www.timecastmodels.co.uk/bh15napothers/bh15napothers.html. Altogether an excellent range though the figures are noticeably smaller and not quite as lovely as AB. Old Glory only have Prussian infantry http://www.oldgloryuk.com/disp_items.php?c=527 and post 1798 Austrians. NB I've edited this post as I made some howlers at the first attempt.
Last edited by Sarmaticus on Sat May 18, 2013 6:34 pm, edited 3 times in total.
I've just remembered Lancashire Games' "1792" Revolutionary range http://store.lancashiregames.net/. It has pre 1798 Austrians but needs Grenadiers (build up the bearskin from the casket with Milliput) and gunners maybe from their Spanish Napoleonics. Post 1798 Austrians are in their Napoileonic range. The Revolutionary French range has most things bar dragooons that can be found in the French Napoleonic range, and horse gunners (the French Revolutionary foot gunners are a bit scruffy and Spanish Napoleonic or AWI French could be used instead). The Prussian range has grenadiers in peaked mitre caps that belong to the latter part of the period; a paint job converts the earlier type from musketeers. Hussars can be found in any of several other ranges but gunners would have to come from the Spanish. Lancashire's Battle Packs are particularly good value. Lancashire have some very nice ranges and some sub-par ones and can vary even within the same period but the Revolutionary period (along with the French FPW range) is one of their best.
Last edited by Sarmaticus on Sat May 18, 2013 6:37 pm, edited 4 times in total.