« Reply #44 on: Sunday 20 November 16 17:19 GMT (UK) »
Unfortunately they appear to have exactly the same missing registers for Carew and Castlemartin as FindMyPast. The registers for Carew exist because I've viewed a transcript of them at the Society of Genealogists library (although I suppose they could be BTs) and Familysearch has extacted entries for Castlemartin.

(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