Thank you, Adrian. I only asked because I checked your URL and saw that you offer wedding photography, so I assume that this was a paid job. Because it would seem that you're likely to be photographing another church wedding in due course, you might perhaps like to consider the following observations
It shows the dress detailing on the back & her hair.
Yes, it does show the dress detailing on the back and her hair, but only in the same sense that it also shows that the groom's hire suit is (as usual) both ill-fitting and badly tailored. Otherwise what it shows is essentially the backs of the main players at a moment when nothing is happening because the vicar's just paused in his spiel.
If a shot of the back of the dress and her hair is important to the bride (and it's often more important to the photographer than it is to the bride), you need to make a proper job of it, and that's a doddle to do either before the ceremony or during the drinks reception. Saying that a general shot such as the above shows the dress detailing and her hair doesn't work for me, and won't for many brides.
Their child is also looking on at proceedings as well as best man & father of the bride.
Indeed they are. But what exactly are they "looking on" at? A vicar who has just finished speaking, that's what. A "looking on at" shot needs to be very well done indeed if it is to be clear to the viewer what the point of the picture is.
You probably plan to be at the alter just the once so a photographic record of proceedings at this point with family and friends in shot was in my thought process when taking the shot.
Sorry, but I simply don't understand that. The star of the show's got to the front, she's handed her flowers to the CBM, and the vicar's paused in what he's saying before Dad hands her over and they get down to the business. What on earth is special about that point in the proceedings? Whatever, one thing to beware of in situations like this is Candle Head. Moving very slightly to your left would have avoided that, and possibly also let us see a bit more of Dad's face.
IMO the other three are excellent. As Hugh says, his jacket is unfortunate in #2 but that's the groom's problem, not yours.