Question: In the 2008 Olympics, where did the torch relay begin in the city where the developer of the .465 H&H Magnum is headquartered?

<P0-S0> Extensive deer stalking, and frequent rifle shooting visits to Bisley ranges, Lloyd established the David Lloyd & Co. riflemakers company (registered company 05202134) at Pipewell Hall in 1936, and in the early 1950s developed the .244 H&H Magnum rifle cartridge, later adopted by Holland & Holland of London. <SEP> <P1-S0> The .465 H&H Magnum is a .468 caliber, belted, rimless bottlenecked cartridge. <P1-S1> The cartridge is a necked-up, shoulder-lowered tapered cartridge based on the .378 Weatherby Magnum case. <P1-S2> The .465 H&H Magnum also known as .465 Holland & Holland Magnum, is a modern big bore firearms cartridge introduced by Holland & Holland in 2003 together with the .400 H&H Magnum. <SEP> <P2-S0> the .300 h&h magnum cartridge was introduced by the british company holland & holland as the "super-thirty" in june, 1925. the case was belted like the .375 h&h magnum, and is based on the same case, as also is the .244 h&h magnum. <P2-S1> the belt is for headspace as the cases' shoulders have a narrow slope rather than an actual shoulder. <P2-S2> more modern magnums continue this practice, but headspacing on the belt is not necessary with their more sharply angled shoulders. <P2-S3> the cartridge was used by american shooter ben comfort to win the 1000-yard wimbledon cup match at camp perry in 1935, and it was used again to win the international 1,000 yard competition in 1937. winchester chambered the model 70 in .300 holland & holland magnum in 1937. <SEP> <P3-S0> Great Britain: The torch relay leg held in London, the host city of the 2012 Summer Olympics, on April 6 began at Wembley Stadium, passed through the City of London, and eventually ended at O2 Arena in the eastern part of the city. <P3-S1> The 48 km (30 mi) leg took a total of seven and a half hours to complete, and attracted protests by pro-Tibetan independence and pro-Human Rights supporters, prompting changes to the planned route and an unscheduled move onto a bus, which was then briefly halted by protestors. <P3-S2> Home Secretary Jacqui Smith has officially complained to Beijing Organising Committee about the conduct of the tracksuit-clad Chinese security guards. <P3-S3> The Chinese officials, seen manhandling protesters, were described by both the London Mayor Ken Livingstone and Lord Coe, chairman of the London Olympic Committee as "thugs". <P3-S4> A Metropolitan police briefing paper revealed that security for the torch relay cost £750,000 and the participation of the Chinese security team had been agreed in advance, despite the Mayor stating, "We did not know beforehand these thugs were from the security services. <P3-S5> Had I known so, we would have said no." <SEP> <P4-S0> the .308 norma magnum (7.62×65mmbr) cartridge was created by nils kvale at norma, sweden. <P4-S1> like the larger .358 norma magnum it is based on the .300 h&h magnum. <P4-S2> the length of the case is the longest that would fit in a standard mauser action. <P4-S3> while it appeared to have a bright future initially, it was soon superseded in popularity by the .300 winchester magnum. <P4-S4> the first, and one of the few, manufacturers to offer rifles in .308 norma magnum was schultz & larsen of denmark and they still are.