« Reply #1 on: Wednesday 01 June 16 16:43 BST (UK) »
You do realise that digitised copies of the original parish records are on Ancestry, FindMyPast only have transcripts from the Northamptonshire Family History Society? They've also been on FindMyPast for several years prior to the originals appearing on Ancestry last year (post 1813 anyway, pre 1813 appeared earlier this year).
That said, as always with Ancestry's indexing, a transcript comes in handy.

(KENT) Lingwell, Rayment (BUCKS) Read, Hutchins (SRY) Costin, Westbrook (DOR) Gibbs, Goreing (DUR) Green (ESX) Rudland, Malden, Rouse, Boosey (FIFE) Foulis, Russell (NFK) Johnson, Farthing, Purdy, Barsham (GLOS) Collett, Morris, Freebury, May, Kirkman (HERTS) Winchester, Linford (NORTHANTS) Bird, Brimley, Chater, Wilford, Read, Chapman, Jeys, Marston, Lumley (WILTS) Arden, Whatley, Batson, Gleed, Greenhill (SOM) Coombs, Watkins (RUT) Stafford (BERKS) Sansom, Angel, Young, Stratton, Weeks, Day