As Mamyalynne points out, I replied to your post with a link to the website operated by the National Travel Health Network and Centre, which is a body set up by Public Health England and funded by the Foreign & Commonwealth Office.
It's that site (and only that site) which your GP would consult if you asked him about which vaccinations you required. It's that site which British Embassy staff will consult before they travel to foreign countries. It's that site which the World Health Organisation feeds the latest information on health hazards to. It's as 'official' and as accurate as it's possible to get. I fail to see what further information it is that you're now seeking.