On this venture i didnt go to every single possible London market- as even in general street markets you may find african textiles or secondhand stalls with beads, and there are regular weekend car boot sales, fleamarkets and farmers markets in various neighbourhoods throughout the year.

Altogether over the 6 days i acquired 18 necklace/items, plus the big Moretti mille oval with the label and a handful of other loose jewellery beads.
the Moretti bead and the Rosary were full retail prices because i wanted them enough to add them to my collection anyway- everything else might be described as "worth more than i paid".
these markets are general antique markets so there are lots of stands with silver items or china or vintage bags and textiles or furniture, books, photos, postcards, toys, etc etc. -very few vendors are specialists.

i never go around pointing out what things are unless i'm really sure they want to know.

The markets that gave the most fun hunting were a good mixture of vendors but not too large altogether -some with very valuable made-up jewellery of precious metals and gemstones, or ethnic and tribal importers, or those with cheap tangled heaps that you can rummage through. -any of them may yield good treasures.
You cant go out with any certainty of what you are going to find.
If the market is too large there may be just too many jewellery sellers, and if very well-known such as Portobello or Camden Lock then its jostling with tourists who look but dont spend, they just want you not to walk through the middle of their photos of each other...

Also of course i recognised a lot of the same dealers selling in more than one of these markets.
Bermondsey is a very pale shadow of its former self, but still i found a few interesting things there.
i'd even say that its not so important to get to any market tremendously early because very few other customers are after just beads, most jewellery buyers want to spend serious money on wearable "statements".
(Currently the exception to this is anything that looks like big primitive opaque yellow amber, -even coral has slightly relaxed.)