Apologies for the delay. I'm the photographer who was next to you. I've got some photos but they're not brilliant. Email me at firstname.lastname@example.org and I'll send them to you.
The photo kindly supplied from Phil is now in the same location as the other photos (link above). It's the last one without the vignetting.
Hi again Jamie,
Thanks for posting the photo. I've tried zooming in but can't distinguish the detail.
Hi, folks. Good to see all the photos. One clearly shows a bird with a bill that's too long for a SC. I saw the juv W Rail there a few days after and it certainly looks like this bird.
I think we can conclude that this was indeed a Water Rail. Some very experienced birders above have ID'd it as such (including seeing the bird themselves), which is certainly good enough for me.
Nice that the bird generated a decent debate though.
Agreed. A good debate. I'm going to assume the matter now closed. Thanks for your help.