Excellent stuff IMO, Graeme
All I can think of to add to that is, with reference to the full works ...
The double heads-up shot would have worked better if he hadn't tilted his up so much (i.e. it was more like hers)
Next but one (him forward of her) would be a lot stronger with (and is a natural for) a tight crop
The shot square on to those green gates has
everything right, which AFAIC is rare in variations on this particular theme . This one won't date as quickly as most.
"Gazing across the table" - I guess that was the best you could do about that reflection, but zapping that hanging lug on the rhs of the frame would be worthwhile
Headshot of her (the one after the bench and 2.7.16) - he'll probably like it lots but for me (and for potential clients) it's a near miss on account of it's all Scouse brows and eyeliner. It needs at least a little eyeball.
I'd also rate the noses shot which comes next as "close but no cigar" on the basis that there isn't enough flare for it to be the classic SoCal flare shot, so to my way thinking it's gone off half-cocked
Having said all that, you really do have some stonkin' good portraits in that lot, with which I'd have been very happy indeed.
Given what you had to go at, it's actually one of the best pre-wedding shoots I've seen in a long time.