First I shall make a small attempt at listing the  pies I have a finger stuck in :-

6mm

Active

• Ancients – the Trebia project
• GNW – Swedish
• SYW – Austrain
• SYW – Ottoman
• NAP – Russian
• Epic 40K – Space Marine
• Epic 40K – Imperial Guard
• Epic 40K – Squat (IG variant list)
• Epic 40K – Orc
• Epic 40K – Eldar

Less active

• War of the Roses/Medieval
• Epic 40K – Tau
• Epic 40K – Chaos
• Epic 40K – Tyranid
• NAP – Austrian

10mm

Active

• Warmaster – Dwarf
• Warmaster- Orc and Goblin
• Warmaster – Empire
• Warmaster – High Elf
• FoW – Panzergrenadier

Less Active

• Warmaster – Dark Elf
• Imperial Roman
• Sarmation
• FoW – American
• FoW – British North African

15mm

Active

• Ancient Greek
• Wars of the Roses (Impetus / Bloody Barons)
• Sci-fi – ARC fleet (CMG)
• Sci-fi – Protolene Khanates (CMG)

Less Acive

• Sci-Fi – Khurasan
• Dark ages

28mm

Active

• Wars of the Roses / Late medieval
• Fantasy – Dwarf
• Fantasy – Orc and goblin
• Space Hulk (gotta love termiators)

Less Active

• Fantasy – Dark Elf, Chaos, Empire, Beastmen……
• 40K (seem to have bought several armies to act as inspiration for the Epic forces!).

Others

Active

• Dystopian Wars
• Firestorm Armada

Think that about covers it…. I may have to many projects on the go.