I found the website for JB cutting tools - their prices certainly take some beating and you can buy just the sizes you need, those mixed sets often contain lots of very small 0.3mm carbide drills which don't seem to get used much!
1.6mm - 2.0mm Slot Drill / End Mill (2 or 3 flute) 1/8" Straight Shank
£1.50 Each
1/8" Shank PCB drills Tungsten Carbide
£0.50 Each
JB Cutting Tools
19 Princess road
Dronfield
Sheffield
S18 2LX
United Kingdom
Phone: 01246 418110
Web:
http://www.JBCuttingtools.Com
Email: Jenny(at)JBCuttingtools.com