Phil,
Good news re TF57.
Country churchyards have been my big disappointment this year when searching for Spotted Flycatchers. My detailed diary tells me that I have now visited exactly 30 different Lincolnshire churchyards, and several more than once, since mid-May (with an average of perhaps c. 20 minutes in each ), the latest ones so far just in July being :
24. Blankeney
25. Dorrington
26. Willoughby
27. South Thoresby
28. Tealby
29. Swinhope
30. Farforth
.....and out of those 30 churchyards, I 've not found/followed up a single churchyard nesting Sp Fly - and with only ONE actual churchyard sighting : Willoughby-by-Stow...21st June, and nesting in the neighbouring garden.. ( although I've had several sightings NEXT to Churchyards where the Sp Fly might have been originally seen in the churchyard ).
Why do I do it, then ? A good question, but churchyards look absolutely ideal habitats and rather like the optimism of the betting man, the NEXT one will be a winner.

.... 'hope over experience', and as Alexander Pope wrote, " Hope springs eternal in the human breast ."
Freddy