Veni Vidi Vici - Suppliers of shield pattern transfers. They are always open to suggestions for new lines.

Too  Fat Lardies - wargames rules writers of some renown.

Hirst Arts - Supplier of moulds for making buildings, looks pretty good for 25mm figures.

All  Terrain - a terrain supplier, very pretty stuff.

Total  System Scenic - another terrain supplier.

Terrain  Warehouse - suppliers of terrain oddly enough.

SnM  Stuff - supplier of paints and other accessories.

Hotz Artworks - game mats, cards ships and other useful accessories.

Principles of War - rules and accessories.

Tiny Tin Troops - Publications for wargamers and accessories.

Nyr Old Design - Figure Painting Service.

Little Big Men - Very good shield transfers and a painting service.

Baueda Wargames - Accessory supplier; tents, etc.

Keep Wargaming - Wargames suppliers.

Hovels - Supplier of buildings, etc.

S & A Scenics - Large scenery supplier.

War Zone - Producers of terrain and other wargaming products.

The Scene - terrain supplier.

Dream Holme - another terrain supplier.

Miniature  Worldmaker - superb rubber wargames terrain, very portable.

Precision  Wargames Supplies - steel bases, measuring sticks, etc.

Warhammer Historicals - Home of WAB.

The Terrain Guy - terrain supplier, obviously, but also sells well respected gaming mats.

Angel Barracks - accessories & 6mm figs.

The League of Augsburg - late C17th rules.

Timecast - buildings and other stuff.

Battle Flag - flags for wargames armies.

Flags of War - more flags.

Solway Crafts and Miniatures - cloth flags!