Good article and very true, I would say that Guerlain even though It produces a lot of scents is certainly a classic perfumer house and still able to dine at the top table.
Not so much a consultation Tony, but i would whole heartedly recommend L'Artisan in Covent Garden. The gentleman that works in there is a credit to his trade and will walk you through all the stages and scent groups if you ask and there is absolutely no pressure to make a purchase.