Simon, you excel in many many way, and I always enjoy looking at your work.
Your best images range from:
classical street-life scenes (vevey 56, 57, tuscany 1, hunt, onde, london 19, new year's eve)
light-shadow plays, a la Gibson (barcelona 64, subliminal dancers, montreux 47, cote'd'azur 17, vevey 69, tuscany 33, berlintangible,
street-life coincidences - think of In Public's Blake Andrews (Cote d'azur 11, rrr)
The weakest ones I find to be juxtaposition shots (assimilation, london 6 and 16, conscience and countenance, scarf matters, horny woman) - I understand they are highly rated these days - see a large chunk of the in-Public collective - but to me most lose interest very quickly. They lack the quality that makes me want to go back at them over again - they don't grow in time. Also, some coincidence shots (ballet 2, by cycles) and the dog/bird shots I don't find particularly strong.
We know, editing is a painful job, but somehow we have to do that. And often the photographer has too many attachments to specific images, that others wouldn't find as strong. Overcoming that bias, and the desire to show more instead of less, is hard. That's where critique (from a 'mentor' you trust) can be very useful. Over a 2 year span, how many truly good shots can one take? I would be happy with less then a dozen. These could end up in a portfolio, and become iconic images that form a photographer's recognizable voice. The other ones can still be good enough for exhibit, or a book.
I'm no expert in any way, these are just my personal thoughts.