I just had a quick look on familysearch using the new search and the marriage for John Flower and Hannah Holt is as follows:
marriage: 15 Oct 1753 — Ellingham, Norfolk, England
groom's name: Jn. Flower Note: the abreviation of his forename.
bride's name: Hannah Hott
marriage date: 15 Oct 1753
marriage place: Ellingham, Norfolk, England
indexing project (batch) number: I02335-8
source film number: 1951630
I also notice that the Ellingham registers are online at familysearch.org so you should be able to get the actual image for this marriage.
Hope this helps
Rick BC Canada