AFAIK the British imported the Dutch M95 Mannlichers as complete military rifles and sporterized them to varying degrees. They always replaced the sights. On cheaper grades they merely sporterized the original miltary stocks without pistol grip, shortenig them, sometimes fitting foreend tips and adding some checkering. More expensive grades were restocked. There are two distinctive styles of Brit stocks for the M95 Mannlicher: George Gibbs of Bristol was a large-scale importer. The 6.5x53R cartridge was also known as .256 Gibbs rimmed. The Gibbs stock style is very distinctive, see here:
http://forums.nitroexpress.com/showflat.php?Cat=0&Number=167792&an=0&page=1#Post167792
Many others were stocked in Birmingham for the British trade. These "Birmingham style" stocks were f.i. offered in the Jeffery's 1910 catalog, but also offered by other "name" makers, like Holland & Holland in this case.