Is Britain throwing away doses of Pfizer/BioNTech's vaccine?

US firm Pfizer claims it packs the vials with extra doses in case the vaccine spills in transit or it gets stuck inside the syringe when it is administered. https://www.dailymail.co.uk/news/article-9063529/Is-Britain-throwing-away-doses-Pfizer-BioNTechs-vaccine.html?ns_mchannel=rss&ns_campaign=1490&ito=1490