I'd like peopes opinions of my insta page - https://www.instagram.com/paul.riddell/

I don't invest into my IG at this point (just random uploads), but if I did, what could I say about yours:

difficult to concentrate, too much varieties of styles, for the SELLING point (if it's the target of yours).
as for non-photographers, usual mess is totally Ok, though, IMHO.
even so, it could be better arranged style-wise, not necessarily chronologically.

my 2 cents

I think it does a good job of showing the diversity of your work and it isn't cluttered with multiple similar images as is often done on IG and is more like a professional portfolio.

Compared to you MM I am surprised it is the same photographer. Perhaps it is the difference in platform or the type of images posted but everything on IG looks better especially in terms of contrast and sharpness. Since only one image is on both it is hard to generalize but the one on IG seems better