At London Bridge, at least, they didn't even _try_ to check for bibs. I
put mine on a little way down the course just to be polite.
Average riding speed was about 8.5-9mph. Lots of very erratic riders
(mostly but not exclusively children). Fair enough; I only saw one
pileup, and it wasn't severe (no blood).
Very crowded round the Buckingham Palace end of the course, caused
mostly by the marshalls letting people across the road. This was of
course necessary, but it made for very big jams of cyclists. Can't see
an easy way to fix this, if you can't get a full road closure.
Free water (and bottles) from Thames Water - very smart move. Free
sandwiches were out of a fridge but very low in salt, and they ran out
of the bacon ones quite early. The "festival" was basically a bunch of
trade-stand tents and a few BMX demos. Some effort to get people to ride
to work, give up cars, etc., but it didn't seem to be making much
impression on the punters.
About 40-50% h*lm*t use, for those keeping track.
R
--
It is by riding a bicycle that you learn the contours of a country best,
since you have to sweat up the hills and coast down them. Thus you
remember them as they actually are [...]
-- Ernest Hemingway