MM wrote:

I just looked up Armeg on the web. Are their products only available
directly from them or from factor like Screwfix?

SF do them, but I think 10mm may be the smallest size

http://screwfix.com/p/belvoir/37342

(I don't dare ask the price of the 8 mm brad point drill! They look
expensive.)

Not cheap, they do a two flute 8mm P/N WBP0080

http://www.accura.ie/woodworking-tools.html