Obsolete Ammunition, where can I obtain newly made rounds in UK?

If it's possible to import components, you can visit a href="http://www.rockymountaincartridge.com" rel="nofollow"http://www.rockymountaincartridge.com/a to pick up a set of very, very high quality reloadable br for the 11mm Beaumont, and the 8mm Lebel can be special ordered from them as well. LEE Precision makes bullet molds with which you can cast bullets, and their LEE clic reloading kit can reload a single caliber for far less than most reloaders. You'll have to have it custom ordered for those calibers, but it's the only way I know how to do it.