Bisley Works AGP Barrel mounts?

Hi all looking for some help or advice,
Does any body know where i can purchase any Bisley Works AGP barrel mounts to fit on my parker Hale mounts for my SMLE Service rifle
Any help will be much apreciated
Roger

Click on link below a piture of the mounts are above the front mount i am after

http://www.rifleman.org.uk/Parker-Hale_Targetscope.htm

Hi Roger,

I've got a very good a stock of bases. The 64 million dollar question....do you know which ones you need? Are you putting this on a No 4 or No1? I can see that your rear scope mount is windage adjustable. What is the dovetail width?

Ron