As part of our job, we have to abide by either the registrars or ministers rules when photographing weddings, we know for instance any weddings conducted by the Swindon Registrars, we have to stop photographing once the bride is in, we are allowed to photograph the exchanging of the rings, and then from the first kiss, but nothing else until the service is over. Then as standard, no one is allowed to photograph the official register, but a dummy one is then used for photos.
That we thought was the worst case scenario, however several times this year, we have been stopped from photographing any of the service, being made to sit at the back of the church out of eye site of the minister and told not to move. It is possible these ministers may have had very bad experiences with pushy photographers in the past, however one did try to tell me it was the Church of England's rules, which as far as I know is rubbish (unless someone can tell me otherwise).
As standard we normally get the couple to check the registrars or churches polices before the day, however on at least two occasions we have only been told this on the day, which means the couple get a lot less photos, and some of the most important photos are missed in my view.
With this in mind, please, please check when booking, and if possible get it agreed in writing just in case the minister changes that you are allowed full photography when booking, it is your day and you should be allowed to have it captured, even if no guests are allowed to take photos, your paid professional should be.
I really hope this helps a few couples in the future to ensure they they the photos they deserve.