Findmypast have some Norfolk records which are not on any other site.
Here are their Blakeney burials for 1807 up to April 1809 (end of book):
https://search.findmypast.com/record..._619-4%2f00691
https://search.findmypast.com/record...UR%2F003274965
The 1807 burials start on the page before the one that I have linked to, continuing straight on from 1806. The burial book starts with 1789 and there are no blank pages.
But there must be another book covering the rest of 1809 through to 1812.
Ah, I see - the other book says "Baptisms 1807-1812, burials 1809-1812" at the beginning but the burial images aren't there.