I'm sure everyone has been in this situation, a small group of cars and only one person who knows how to get to the destination, so everyone else has to follow.
Some things are obvious
1) If possible, order the car from slowest car to fastest* so that the convoy doesn't stray above someone's ability level and also because the better cars are more likely to be able to catch up
2) Don't amber gamble, don't go through the lights near the end of the green phase.
3) Make sure there's a big enough gap for everyone to get out at once
4) Use your indicators for gods sake
5) If making lane changes signal at a point when there are no cars preventing anyone from changing lane, then let the car at the back change lane first, then the rest of you move across.
After that, it gets a lot less clear cut.
Do you
a) Drive close to the person in front, making sure you are checking in front of them and anticipating their moves, like the "overtaking position" that some people talk about. I tend to do this when following my GF because I know how she drives and I have better brakes than her
b) Leave a longer gap, accept that any safe gap will immediately be filled by some git, then if dual carriageway or long straight, slow down until they get pissed off enough to overtake, or pull into bus shelters and laybys all the time to regroup
Both of the above are probably wrong, so what is the advice of the experts here?
* unlike today where the only person who knew where we were going drove a heavily modified Nissan Skyline GT-R o_O