Colsterworth is one of the places that you can browse images of the C/M/B registers on the new Lincs site Ann posted about.
EDIT - Sorry Rosie looks like I made a mistake, that or they were there last week & aren't now
I'm sure I did see them as they came up in one of my searches, I remember thinking i've added to a thread on here about that place! Went off to see if I could post a link to them on here but none of the results link to images. Hopefully they'll be added as the site grows.